Add latest changes from gitlab-org/gitlab@master

232 files changed, 1564 insertions, 277 deletions

diff --git a/app/assets/javascripts/boards/components/boards_selector.vue b/app/assets/javascripts/boards/components/boards_selector.vue
index eeb0fbec1ed..5e8b80cd959 100644
--- a/app/assets/javascripts/boards/components/boards_selector.vue
+++ b/app/assets/javascripts/boards/components/boards_selector.vue
@@ -110,14 +110,6 @@ export default {
         board.name.toLowerCase().includes(this.filterTerm.toLowerCase()),
       );
     },
-    reload: {
-      get() {
-        return this.state.reload;
-      },
-      set(newValue) {
-        this.state.reload = newValue;
-      },
-    },
     board() {
       return this.state.currentBoard;
     },
@@ -142,16 +134,6 @@ export default {
       this.scrollFadeInitialized = false;
       this.$nextTick(this.setScrollFade);
     },
-    reload() {
-      if (this.reload) {
-        this.boards = [];
-        this.recentBoards = [];
-        this.loading = true;
-        this.reload = false;
-
-        this.loadBoards(false);
-      }
-    },
   },
   created() {
     boardsStore.setCurrentBoard(this.currentBoard);
diff --git a/app/assets/javascripts/boards/stores/boards_store.js b/app/assets/javascripts/boards/stores/boards_store.js
index e5ce8b70a4f..f233228614f 100644
--- a/app/assets/javascripts/boards/stores/boards_store.js
+++ b/app/assets/javascripts/boards/stores/boards_store.js
@@ -30,7 +30,6 @@ const boardsStore = {
       labels: [],
     },
     currentPage: '',
-    reload: false,
     endpoints: {},
   },
   detail: {
@@ -61,7 +60,6 @@ const boardsStore = {
     };
   },
   showPage(page) {
-    this.state.reload = false;
     this.state.currentPage = page;
   },
   addList(listObj, defaultAvatar) {
diff --git a/app/assets/stylesheets/framework/buttons.scss b/app/assets/stylesheets/framework/buttons.scss
index 1b549c0a4f0..ecbc5fa9351 100644
--- a/app/assets/stylesheets/framework/buttons.scss
+++ b/app/assets/stylesheets/framework/buttons.scss
@@ -371,8 +371,11 @@
 }
 
 .btn-loading {
-  &:not(.disabled) .fa {
-    display: none;
+  &:not(.disabled) {
+    .fa,
+    .spinner {
+      display: none;
+    }
   }
 
   .fa {
diff --git a/app/models/concerns/milestone_eventable.rb b/app/models/concerns/milestone_eventable.rb
new file mode 100644
index 00000000000..17a02c9d3e4
--- /dev/null
+++ b/app/models/concerns/milestone_eventable.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+module MilestoneEventable
+  extend ActiveSupport::Concern
+
+  included do
+    has_many :resource_milestone_events
+  end
+end
diff --git a/app/models/concerns/resource_event_tools.rb b/app/models/concerns/resource_event_tools.rb
new file mode 100644
index 00000000000..7226b9573e1
--- /dev/null
+++ b/app/models/concerns/resource_event_tools.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module ResourceEventTools
+  extend ActiveSupport::Concern
+
+  included do
+    belongs_to :user
+
+    validates :user, presence: { unless: :importing? }, on: :create
+
+    validate :exactly_one_issuable
+
+    scope :created_after, ->(time) { where('created_at > ?', time) }
+  end
+
+  def exactly_one_issuable
+    issuable_count = self.class.issuable_attrs.count { |attr| self["#{attr}_id"] }
+
+    return true if issuable_count == 1
+
+    # if none of issuable IDs is set, check explicitly if nested issuable
+    # object is set, this is used during project import
+    if issuable_count == 0 && importing?
+      issuable_count = self.class.issuable_attrs.count { |attr| self.public_send(attr) } # rubocop:disable GitlabSecurity/PublicSend
+
+      return true if issuable_count == 1
+    end
+
+    errors.add(:base, "Exactly one of #{self.class.issuable_attrs.join(', ')} is required")
+  end
+end
diff --git a/app/models/issue.rb b/app/models/issue.rb
index 83f9e803d42..1c191064d1a 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -15,6 +15,7 @@ class Issue < ApplicationRecord
   include ThrottledTouch
   include LabelEventable
   include IgnorableColumns
+  include MilestoneEventable
 
   DueDateStruct                   = Struct.new(:title, :name).freeze
   NoDueDate                       = DueDateStruct.new('No Due Date', '0').freeze
diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index b469174fc63..5dda1bd8cc7 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -18,6 +18,7 @@ class MergeRequest < ApplicationRecord
   include DeprecatedAssignee
   include ShaAttribute
   include IgnorableColumns
+  include MilestoneEventable
 
   sha_attribute :squash_commit_sha
 
diff --git a/app/models/milestone_note.rb b/app/models/milestone_note.rb
new file mode 100644
index 00000000000..8ff0503502f
--- /dev/null
+++ b/app/models/milestone_note.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+class MilestoneNote < ::Note
+  attr_accessor :resource_parent, :event, :milestone
+
+  def self.from_event(event, resource: nil, resource_parent: nil)
+    resource ||= event.resource
+
+    attrs = {
+        system: true,
+        author: event.user,
+        created_at: event.created_at,
+        noteable: resource,
+        milestone: event.milestone,
+        event: event,
+        system_note_metadata: ::SystemNoteMetadata.new(action: 'milestone'),
+        resource_parent: resource_parent
+    }
+
+    if resource_parent.is_a?(Project)
+      attrs[:project_id] = resource_parent.id
+    end
+
+    MilestoneNote.new(attrs)
+  end
+
+  def note
+    @note ||= note_text
+  end
+
+  def note_html
+    @note_html ||= Banzai::Renderer.cacheless_render_field(self, :note, { group: group, project: project })
+  end
+
+  def project
+    resource_parent if resource_parent.is_a?(Project)
+  end
+
+  def group
+    resource_parent if resource_parent.is_a?(Group)
+  end
+
+  private
+
+  def note_text(html: false)
+    format = milestone&.group_milestone? ? :name : :iid
+    milestone.nil? ? 'removed milestone' : "changed milestone to #{milestone.to_reference(project, format: format)}"
+  end
+end
diff --git a/app/models/resource_label_event.rb b/app/models/resource_label_event.rb
index 98fc9e7bae8..59907f1b962 100644
--- a/app/models/resource_label_event.rb
+++ b/app/models/resource_label_event.rb
@@ -4,20 +4,17 @@ class ResourceLabelEvent < ApplicationRecord
   include Importable
   include Gitlab::Utils::StrongMemoize
   include CacheMarkdownField
+  include ResourceEventTools
 
   cache_markdown_field :reference
 
-  belongs_to :user
   belongs_to :issue
   belongs_to :merge_request
   belongs_to :label
 
-  scope :created_after, ->(time) { where('created_at > ?', time) }
   scope :inc_relations, -> { includes(:label, :user) }
 
-  validates :user, presence: { unless: :importing? }, on: :create
   validates :label, presence: { unless: :importing? }, on: :create
-  validate :exactly_one_issuable
 
   after_save :expire_etag_cache
   after_destroy :expire_etag_cache
@@ -94,22 +91,6 @@ class ResourceLabelEvent < ApplicationRecord
     end
   end
 
-  def exactly_one_issuable
-    issuable_count = self.class.issuable_attrs.count { |attr| self["#{attr}_id"] }
-
-    return true if issuable_count == 1
-
-    # if none of issuable IDs is set, check explicitly if nested issuable
-    # object is set, this is used during project import
-    if issuable_count == 0 && importing?
-      issuable_count = self.class.issuable_attrs.count { |attr| self.public_send(attr) } # rubocop:disable GitlabSecurity/PublicSend
-
-      return true if issuable_count == 1
-    end
-
-    errors.add(:base, "Exactly one of #{self.class.issuable_attrs.join(', ')} is required")
-  end
-
   def expire_etag_cache
     issuable.expire_note_etag_cache
   end
diff --git a/app/models/resource_milestone_event.rb b/app/models/resource_milestone_event.rb
new file mode 100644
index 00000000000..ba43a1ee363
--- /dev/null
+++ b/app/models/resource_milestone_event.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+class ResourceMilestoneEvent < ApplicationRecord
+  include Gitlab::Utils::StrongMemoize
+  include Importable
+  include ResourceEventTools
+
+  belongs_to :issue
+  belongs_to :merge_request
+  belongs_to :milestone
+
+  scope :by_issue, ->(issue) { where(issue_id: issue.id) }
+  scope :by_merge_request, ->(merge_request) { where(merge_request_id: merge_request.id) }
+
+  enum action: {
+         add: 1,
+         remove: 2
+       }
+
+  # state is used for issue and merge request states.
+  enum state: Issue.available_states.merge(MergeRequest.available_states)
+
+  def self.issuable_attrs
+    %i(issue merge_request).freeze
+  end
+
+  def resource
+    issue || merge_request
+  end
+end
diff --git a/app/services/issuable/clone/attributes_rewriter.rb b/app/services/issuable/clone/attributes_rewriter.rb
index 2b436f6322c..135ab011d69 100644
--- a/app/services/issuable/clone/attributes_rewriter.rb
+++ b/app/services/issuable/clone/attributes_rewriter.rb
@@ -19,6 +19,7 @@ module Issuable
 
         copy_resource_label_events
         copy_resource_weight_events
+        copy_resource_milestone_events
       end
 
       private
@@ -65,6 +66,23 @@ module Issuable
         end
       end
 
+      def copy_resource_milestone_events
+        entity_key = new_entity.class.name.underscore.foreign_key
+
+        copy_events(ResourceMilestoneEvent.table_name, original_entity.resource_milestone_events) do |event|
+          matching_destination_milestone = matching_milestone(event.milestone.title)
+
+          if matching_destination_milestone.present?
+            event.attributes
+              .except('id', 'reference', 'reference_html')
+              .merge(entity_key => new_entity.id,
+                     'milestone_id' => matching_destination_milestone.id,
+                     'action' => ResourceMilestoneEvent.actions[event.action],
+                     'state' => ResourceMilestoneEvent.states[event.state])
+          end
+        end
+      end
+
       def copy_events(table_name, events_to_copy)
         events_to_copy.find_in_batches do |batch|
           events = batch.map do |event|
diff --git a/app/services/issuable/common_system_notes_service.rb b/app/services/issuable/common_system_notes_service.rb
index 846b881e819..c53e19c922a 100644
--- a/app/services/issuable/common_system_notes_service.rb
+++ b/app/services/issuable/common_system_notes_service.rb
@@ -22,13 +22,17 @@ module Issuable
         end
 
         create_due_date_note if issuable.previous_changes.include?('due_date')
-        create_milestone_note if issuable.previous_changes.include?('milestone_id')
+        create_milestone_note if has_milestone_changes?
         create_labels_note(old_labels) if old_labels && issuable.labels != old_labels
       end
     end
 
     private
 
+    def has_milestone_changes?
+      issuable.previous_changes.include?('milestone_id')
+    end
+
     def handle_time_tracking_note
       if issuable.previous_changes.include?('time_estimate')
         create_time_estimate_note
@@ -95,7 +99,16 @@ module Issuable
     end
 
     def create_milestone_note
-      SystemNoteService.change_milestone(issuable, issuable.project, current_user, issuable.milestone)
+      if milestone_changes_tracking_enabled?
+        # Creates a synthetic note
+        ResourceEvents::ChangeMilestoneService.new(resource: issuable, user: current_user).execute
+      else
+        SystemNoteService.change_milestone(issuable, issuable.project, current_user, issuable.milestone)
+      end
+    end
+
+    def milestone_changes_tracking_enabled?
+      ::Feature.enabled?(:track_resource_milestone_change_events, issuable.project)
     end
 
     def create_due_date_note
diff --git a/app/services/resource_events/change_milestone_service.rb b/app/services/resource_events/change_milestone_service.rb
new file mode 100644
index 00000000000..bad7d002c65
--- /dev/null
+++ b/app/services/resource_events/change_milestone_service.rb
@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+module ResourceEvents
+  class ChangeMilestoneService
+    attr_reader :resource, :user, :event_created_at, :resource_args
+
+    def initialize(resource:, user:, created_at: Time.now)
+      @resource = resource
+      @user = user
+      @event_created_at = created_at
+
+      @resource_args = {
+        user_id: user.id,
+        created_at: event_created_at
+      }
+    end
+
+    def execute
+      args = build_resource_args
+
+      action = if milestone.nil?
+                 :remove
+               else
+                 :add
+               end
+
+      record = args.merge(milestone_id: milestone&.id, action: ResourceMilestoneEvent.actions[action])
+
+      create_event(record)
+    end
+
+    private
+
+    def milestone
+      resource&.milestone
+    end
+
+    def create_event(record)
+      ResourceMilestoneEvent.create(record)
+
+      resource.expire_note_etag_cache
+    end
+
+    def build_resource_args
+      key = resource.class.name.underscore.foreign_key
+
+      resource_args.merge(key => resource.id, state: ResourceMilestoneEvent.states[resource.state])
+    end
+  end
+end
diff --git a/app/services/resource_events/merge_into_notes_service.rb b/app/services/resource_events/merge_into_notes_service.rb
index 47948fcff6e..4aa9bb80229 100644
--- a/app/services/resource_events/merge_into_notes_service.rb
+++ b/app/services/resource_events/merge_into_notes_service.rb
@@ -9,6 +9,11 @@ module ResourceEvents
   class MergeIntoNotesService
     include Gitlab::Utils::StrongMemoize
 
+    SYNTHETIC_NOTE_BUILDER_SERVICES = [
+      SyntheticLabelNotesBuilderService,
+      SyntheticMilestoneNotesBuilderService
+    ].freeze
+
     attr_reader :resource, :current_user, :params
 
     def initialize(resource, current_user, params = {})
@@ -24,7 +29,9 @@ module ResourceEvents
     private
 
     def synthetic_notes
-      SyntheticLabelNotesBuilderService.new(resource, current_user, params).execute
+      SYNTHETIC_NOTE_BUILDER_SERVICES.flat_map do |service|
+        service.new(resource, current_user, params).execute
+      end
     end
   end
 end
diff --git a/app/services/resource_events/synthetic_milestone_notes_builder_service.rb b/app/services/resource_events/synthetic_milestone_notes_builder_service.rb
new file mode 100644
index 00000000000..ad58417834e
--- /dev/null
+++ b/app/services/resource_events/synthetic_milestone_notes_builder_service.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+# We store events about resource milestone changes in a separate table,
+# but we still want to display notes about milestone changes
+# as classic system notes in UI. This service generates "synthetic" notes for
+# milestone event changes.
+
+module ResourceEvents
+  class SyntheticMilestoneNotesBuilderService < BaseSyntheticNotesBuilderService
+    private
+
+    def synthetic_notes
+      return [] unless tracking_enabled?
+
+      milestone_change_events.map do |event|
+        MilestoneNote.from_event(event, resource: resource, resource_parent: resource_parent)
+      end
+    end
+
+    def milestone_change_events
+      return [] unless resource.respond_to?(:resource_milestone_events)
+
+      events = resource.resource_milestone_events.includes(user: :status) # rubocop: disable CodeReuse/ActiveRecord
+      since_fetch_at(events)
+    end
+
+    def tracking_enabled?
+      ::Feature.enabled?(:track_resource_milestone_change_events, resource.project)
+    end
+  end
+end
diff --git a/app/views/dashboard/todos/_todo.html.haml b/app/views/dashboard/todos/_todo.html.haml
index fdb71d3a221..f5ffe8f2e36 100644
--- a/app/views/dashboard/todos/_todo.html.haml
+++ b/app/views/dashboard/todos/_todo.html.haml
@@ -48,14 +48,14 @@
 
   - if todo.pending?
     .todo-actions
-      = link_to dashboard_todo_path(todo), method: :delete, class: 'btn btn-loading js-done-todo', data: { href: dashboard_todo_path(todo) } do
+      = link_to dashboard_todo_path(todo), method: :delete, class: 'btn btn-loading d-flex align-items-center js-done-todo', data: { href: dashboard_todo_path(todo) } do
         Done
-        = icon('spinner spin')
-      = link_to restore_dashboard_todo_path(todo), method: :patch, class: 'btn btn-loading js-undo-todo hidden', data: { href: restore_dashboard_todo_path(todo) } do
+        %span.spinner.ml-1
+      = link_to restore_dashboard_todo_path(todo), method: :patch, class: 'btn btn-loading d-flex align-items-center js-undo-todo hidden', data: { href: restore_dashboard_todo_path(todo) } do
         Undo
-        = icon('spinner spin')
+        %span.spinner.ml-1
   - else
     .todo-actions
-      = link_to restore_dashboard_todo_path(todo), method: :patch, class: 'btn btn-loading js-add-todo', data: { href: restore_dashboard_todo_path(todo) } do
+      = link_to restore_dashboard_todo_path(todo), method: :patch, class: 'btn btn-loading d-flex align-items-center js-add-todo', data: { href: restore_dashboard_todo_path(todo) } do
         Add a To Do
-        = icon('spinner spin')
+        %span.spinner.ml-1
diff --git a/app/views/dashboard/todos/index.html.haml b/app/views/dashboard/todos/index.html.haml
index 731e763f2be..cfc637592d3 100644
--- a/app/views/dashboard/todos/index.html.haml
+++ b/app/views/dashboard/todos/index.html.haml
@@ -26,12 +26,12 @@
     .nav-controls
       - if @todos.any?(&:pending?)
         .append-right-default
-          = link_to destroy_all_dashboard_todos_path(todos_filter_params), class: 'btn btn-loading js-todos-mark-all', method: :delete, data: { href: destroy_all_dashboard_todos_path(todos_filter_params) } do
+          = link_to destroy_all_dashboard_todos_path(todos_filter_params), class: 'btn btn-loading d-flex align-items-center js-todos-mark-all', method: :delete, data: { href: destroy_all_dashboard_todos_path(todos_filter_params) } do
             Mark all as done
-            = icon('spinner spin')
-          = link_to bulk_restore_dashboard_todos_path, class: 'btn btn-loading js-todos-undo-all hidden', method: :patch , data: { href: bulk_restore_dashboard_todos_path(todos_filter_params) } do
+            %span.spinner.ml-1
+          = link_to bulk_restore_dashboard_todos_path, class: 'btn btn-loading d-flex align-items-center js-todos-undo-all hidden', method: :patch , data: { href: bulk_restore_dashboard_todos_path(todos_filter_params) } do
             Undo mark all as done
-            = icon('spinner spin')
+            %span.spinner.ml-1
 
   .todos-filters
     .issues-details-filters.row-content-block.second-block
diff --git a/app/workers/admin_email_worker.rb b/app/workers/admin_email_worker.rb
index 9388b1014ac..c84ac60d777 100644
--- a/app/workers/admin_email_worker.rb
+++ b/app/workers/admin_email_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class AdminEmailWorker
+class AdminEmailWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   # rubocop:disable Scalability/CronWorkerContext
   # This worker does not perform work scoped to a context
diff --git a/app/workers/all_queues.yml b/app/workers/all_queues.yml
index 459872965f8..e8682769720 100644
--- a/app/workers/all_queues.yml
+++ b/app/workers/all_queues.yml
@@ -9,1077 +9,1257 @@
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: auto_merge:auto_merge_process
   :feature_category: :continuous_delivery
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 3
+  :idempotent: 
 - :name: chaos:chaos_cpu_spin
   :feature_category: :chaos_engineering
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: chaos:chaos_db_spin
   :feature_category: :chaos_engineering
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: chaos:chaos_kill
   :feature_category: :chaos_engineering
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: chaos:chaos_leak_mem
   :feature_category: :chaos_engineering
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: chaos:chaos_sleep
   :feature_category: :chaos_engineering
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: container_repository:cleanup_container_repository
   :feature_category: :container_registry
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: container_repository:delete_container_repository
   :feature_category: :container_registry
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:admin_email
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:ci_archive_traces_cron
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:container_expiration_policy
   :feature_category: :container_registry
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:environments_auto_stop_cron
   :feature_category: :continuous_delivery
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:expire_build_artifacts
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:gitlab_usage_ping
   :feature_category: :collection
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:import_export_project_cleanup
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:issue_due_scheduler
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:namespaces_prune_aggregation_schedules
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 1
+  :idempotent: 
 - :name: cronjob:pages_domain_removal_cron
   :feature_category: :pages
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 1
+  :idempotent: 
 - :name: cronjob:pages_domain_ssl_renewal_cron
   :feature_category: :pages
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:pages_domain_verification_cron
   :feature_category: :pages
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:personal_access_tokens_expiring
   :feature_category: :authentication_and_authorization
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:pipeline_schedule
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 1
+  :idempotent: 
 - :name: cronjob:prune_old_events
   :feature_category: :users
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:prune_web_hook_logs
   :feature_category: :integrations
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:remove_expired_group_links
   :feature_category: :authentication_and_authorization
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:remove_expired_members
   :feature_category: :authentication_and_authorization
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 1
+  :idempotent: 
 - :name: cronjob:remove_unreferenced_lfs_objects
   :feature_category: :git_lfs
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:repository_archive_cache
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:repository_check_dispatch
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:requests_profiles
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:schedule_migrate_external_diffs
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:stuck_ci_jobs
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 1
+  :idempotent: 
 - :name: cronjob:stuck_import_jobs
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 1
+  :idempotent: 
 - :name: cronjob:stuck_merge_jobs
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: cronjob:trending_projects
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: deployment:deployments_finished
   :feature_category: :continuous_delivery
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 3
+  :idempotent: 
 - :name: deployment:deployments_forward_deployment
   :feature_category: :continuous_delivery
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 3
+  :idempotent: 
 - :name: deployment:deployments_success
   :feature_category: :continuous_delivery
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 3
+  :idempotent: 
 - :name: gcp_cluster:cluster_configure
   :feature_category: :kubernetes_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:cluster_configure_istio
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:cluster_install_app
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:cluster_patch_app
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:cluster_project_configure
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:cluster_provision
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:cluster_upgrade_app
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:cluster_wait_for_app_installation
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:cluster_wait_for_ingress_ip_address
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:clusters_applications_activate_service
   :feature_category: :kubernetes_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:clusters_applications_deactivate_service
   :feature_category: :kubernetes_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:clusters_applications_uninstall
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:clusters_applications_wait_for_uninstall_app
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:clusters_cleanup_app
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:clusters_cleanup_project_namespace
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:clusters_cleanup_service_account
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gcp_cluster:wait_for_cluster_creation
   :feature_category: :kubernetes_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_import_diff_note
   :feature_category: :importers
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_import_issue
   :feature_category: :importers
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_import_lfs_object
   :feature_category: :importers
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_import_note
   :feature_category: :importers
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_import_pull_request
   :feature_category: :importers
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_refresh_import_jid
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_stage_finish_import
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_stage_import_base_data
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_stage_import_issues_and_diff_notes
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_stage_import_lfs_objects
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_stage_import_notes
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_stage_import_pull_requests
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_importer:github_import_stage_import_repository
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: hashed_storage:hashed_storage_migrator
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: hashed_storage:hashed_storage_project_migrate
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: hashed_storage:hashed_storage_project_rollback
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: hashed_storage:hashed_storage_rollbacker
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: incident_management:incident_management_process_alert
   :feature_category: :incident_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: mail_scheduler:mail_scheduler_issue_due
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: mail_scheduler:mail_scheduler_notification_service
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 2
+  :idempotent: 
 - :name: notifications:new_release
   :feature_category: :release_orchestration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: object_pool:object_pool_create
   :feature_category: :gitaly
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: object_pool:object_pool_destroy
   :feature_category: :gitaly
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: object_pool:object_pool_join
   :feature_category: :gitaly
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 1
+  :idempotent: 
 - :name: object_pool:object_pool_schedule_join
   :feature_category: :gitaly
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: object_storage:object_storage_background_move
   :feature_category: :not_owned
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: object_storage:object_storage_migrate_uploads
   :feature_category: :not_owned
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: pipeline_background:archive_trace
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: pipeline_background:ci_build_trace_chunk_flush
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: pipeline_cache:expire_job_cache
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 3
+  :idempotent: true
 - :name: pipeline_cache:expire_pipeline_cache
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 3
+  :idempotent: 
 - :name: pipeline_creation:create_pipeline
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 4
+  :idempotent: 
 - :name: pipeline_creation:run_pipeline_schedule
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 4
+  :idempotent: 
 - :name: pipeline_default:build_coverage
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 3
+  :idempotent: 
 - :name: pipeline_default:build_trace_sections
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 3
+  :idempotent: 
 - :name: pipeline_default:ci_create_cross_project_pipeline
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 3
+  :idempotent: 
 - :name: pipeline_default:ci_pipeline_bridge_status
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 3
+  :idempotent: 
 - :name: pipeline_default:pipeline_metrics
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 3
+  :idempotent: 
 - :name: pipeline_default:pipeline_notification
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 3
+  :idempotent: 
 - :name: pipeline_hooks:build_hooks
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: pipeline_hooks:pipeline_hooks
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 2
+  :idempotent: 
 - :name: pipeline_processing:build_finished
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 5
+  :idempotent: 
 - :name: pipeline_processing:build_queue
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 5
+  :idempotent: 
 - :name: pipeline_processing:build_success
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 5
+  :idempotent: 
 - :name: pipeline_processing:ci_build_prepare
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 5
+  :idempotent: 
 - :name: pipeline_processing:ci_build_schedule
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 5
+  :idempotent: 
 - :name: pipeline_processing:ci_resource_groups_assign_resource_from_resource_group
   :feature_category: :continuous_delivery
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 5
+  :idempotent: 
 - :name: pipeline_processing:pipeline_process
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 5
+  :idempotent: 
 - :name: pipeline_processing:pipeline_success
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 5
+  :idempotent: 
 - :name: pipeline_processing:pipeline_update
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 5
+  :idempotent: 
 - :name: pipeline_processing:stage_update
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 5
+  :idempotent: 
 - :name: pipeline_processing:update_head_pipeline_for_merge_request
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 5
+  :idempotent: 
 - :name: repository_check:repository_check_batch
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: repository_check:repository_check_clear
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: repository_check:repository_check_single_repository
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: todos_destroyer:todos_destroyer_confidential_issue
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: todos_destroyer:todos_destroyer_entity_leave
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: todos_destroyer:todos_destroyer_group_private
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: todos_destroyer:todos_destroyer_private_features
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: todos_destroyer:todos_destroyer_project_private
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: update_namespace_statistics:namespaces_root_statistics
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: update_namespace_statistics:namespaces_schedule_aggregation
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: authorized_projects
   :feature_category: :authentication_and_authorization
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: background_migration
   :feature_category: :not_owned
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: chat_notification
   :feature_category: :chatops
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: create_commit_signature
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: create_evidence
   :feature_category: :release_governance
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: create_note_diff_file
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: default
   :feature_category: 
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: 
   :weight: 1
+  :idempotent: 
 - :name: delete_diff_files
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: delete_merged_branches
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: delete_stored_files
   :feature_category: :not_owned
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: delete_user
   :feature_category: :authentication_and_authorization
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: detect_repository_languages
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: email_receiver
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: emails_on_push
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 2
+  :idempotent: 
 - :name: error_tracking_issue_link
   :feature_category: :error_tracking
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: expire_build_instance_artifacts
   :feature_category: :continuous_integration
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: file_hook
   :feature_category: :integrations
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: git_garbage_collect
   :feature_category: :gitaly
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: github_import_advance_stage
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: gitlab_shell
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: group_destroy
   :feature_category: :subgroups
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: group_export
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: group_import
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: import_issues_csv
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :cpu
   :weight: 2
+  :idempotent: 
 - :name: invalid_gpg_signature_update
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: irker
   :feature_category: :integrations
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: mailers
   :feature_category: 
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: 
   :weight: 2
+  :idempotent: 
 - :name: merge
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 5
+  :idempotent: 
 - :name: merge_request_mergeability_check
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: migrate_external_diffs
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: namespaceless_project_destroy
   :feature_category: :authentication_and_authorization
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: new_issue
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 2
+  :idempotent: 
 - :name: new_merge_request
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 2
+  :idempotent: 
 - :name: new_note
   :feature_category: :issue_tracking
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 2
+  :idempotent: 
 - :name: pages
   :feature_category: :pages
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: pages_domain_ssl_renewal
   :feature_category: :pages
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: pages_domain_verification
   :feature_category: :pages
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: phabricator_import_import_tasks
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: post_receive
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 5
+  :idempotent: 
 - :name: process_commit
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 3
+  :idempotent: 
 - :name: project_cache
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: project_daily_statistics
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: project_destroy
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: project_export
   :feature_category: :importers
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :memory
   :weight: 1
+  :idempotent: 
 - :name: project_service
   :feature_category: :integrations
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: propagate_service_template
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: reactive_caching
   :feature_category: :not_owned
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 1
+  :idempotent: 
 - :name: rebase
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: remote_mirror_notification
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: repository_cleanup
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: repository_fork
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: repository_import
   :feature_category: :importers
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: repository_remove_remote
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: repository_update_remote_mirror
   :feature_category: :source_code_management
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: self_monitoring_project_create
   :feature_category: :metrics
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: self_monitoring_project_delete
   :feature_category: :metrics
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 2
+  :idempotent: 
 - :name: system_hook_push
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: update_external_pull_requests
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 3
+  :idempotent: 
 - :name: update_merge_requests
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: true
   :resource_boundary: :cpu
   :weight: 3
+  :idempotent: 
 - :name: update_project_statistics
   :feature_category: :source_code_management
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: upload_checksum
   :feature_category: :geo_replication
   :has_external_dependencies: 
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
 - :name: web_hook
   :feature_category: :integrations
   :has_external_dependencies: true
   :latency_sensitive: 
   :resource_boundary: :unknown
   :weight: 1
+  :idempotent: 
diff --git a/app/workers/archive_trace_worker.rb b/app/workers/archive_trace_worker.rb
index 66f9b8d9e80..3ddb5686bf2 100644
--- a/app/workers/archive_trace_worker.rb
+++ b/app/workers/archive_trace_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ArchiveTraceWorker
+class ArchiveTraceWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineBackgroundQueue
 
diff --git a/app/workers/authorized_projects_worker.rb b/app/workers/authorized_projects_worker.rb
index 1ab2fd6023f..cd7ce386433 100644
--- a/app/workers/authorized_projects_worker.rb
+++ b/app/workers/authorized_projects_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class AuthorizedProjectsWorker
+class AuthorizedProjectsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   prepend WaitableWorker
 
diff --git a/app/workers/auto_devops/disable_worker.rb b/app/workers/auto_devops/disable_worker.rb
index 73ddc591505..bae08cf9e18 100644
--- a/app/workers/auto_devops/disable_worker.rb
+++ b/app/workers/auto_devops/disable_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module AutoDevops
-  class DisableWorker
+  class DisableWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include AutoDevopsQueue
 
diff --git a/app/workers/auto_merge_process_worker.rb b/app/workers/auto_merge_process_worker.rb
index 1681fac3363..2599c76c900 100644
--- a/app/workers/auto_merge_process_worker.rb
+++ b/app/workers/auto_merge_process_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class AutoMergeProcessWorker
+class AutoMergeProcessWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   queue_namespace :auto_merge
diff --git a/app/workers/background_migration_worker.rb b/app/workers/background_migration_worker.rb
index 20e2cdd7f96..231c2bcd83b 100644
--- a/app/workers/background_migration_worker.rb
+++ b/app/workers/background_migration_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class BackgroundMigrationWorker
+class BackgroundMigrationWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category_not_owned!
@@ -22,17 +22,19 @@ class BackgroundMigrationWorker
   # class_name - The class name of the background migration to run.
   # arguments - The arguments to pass to the migration class.
   def perform(class_name, arguments = [])
-    should_perform, ttl = perform_and_ttl(class_name)
+    with_context(caller_id: class_name.to_s) do
+      should_perform, ttl = perform_and_ttl(class_name)
 
-    if should_perform
-      Gitlab::BackgroundMigration.perform(class_name, arguments)
-    else
-      # If the lease could not be obtained this means either another process is
-      # running a migration of this class or we ran one recently. In this case
-      # we'll reschedule the job in such a way that it is picked up again around
-      # the time the lease expires.
-      self.class
-        .perform_in(ttl || self.class.minimum_interval, class_name, arguments)
+      if should_perform
+        Gitlab::BackgroundMigration.perform(class_name, arguments)
+      else
+        # If the lease could not be obtained this means either another process is
+        # running a migration of this class or we ran one recently. In this case
+        # we'll reschedule the job in such a way that it is picked up again around
+        # the time the lease expires.
+        self.class
+          .perform_in(ttl || self.class.minimum_interval, class_name, arguments)
+      end
     end
   end
 
diff --git a/app/workers/build_coverage_worker.rb b/app/workers/build_coverage_worker.rb
index 912c53e11f8..7d893024abc 100644
--- a/app/workers/build_coverage_worker.rb
+++ b/app/workers/build_coverage_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class BuildCoverageWorker
+class BuildCoverageWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/build_finished_worker.rb b/app/workers/build_finished_worker.rb
index 77ce0923307..0e69aa07cc1 100644
--- a/app/workers/build_finished_worker.rb
+++ b/app/workers/build_finished_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class BuildFinishedWorker
+class BuildFinishedWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/build_hooks_worker.rb b/app/workers/build_hooks_worker.rb
index fa55769e486..2662e991773 100644
--- a/app/workers/build_hooks_worker.rb
+++ b/app/workers/build_hooks_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class BuildHooksWorker
+class BuildHooksWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/build_queue_worker.rb b/app/workers/build_queue_worker.rb
index 6f75f403e6e..16d347a0e5c 100644
--- a/app/workers/build_queue_worker.rb
+++ b/app/workers/build_queue_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class BuildQueueWorker
+class BuildQueueWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/build_success_worker.rb b/app/workers/build_success_worker.rb
index b7dbd367fee..cb670b5bca7 100644
--- a/app/workers/build_success_worker.rb
+++ b/app/workers/build_success_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class BuildSuccessWorker
+class BuildSuccessWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/build_trace_sections_worker.rb b/app/workers/build_trace_sections_worker.rb
index 0641130fd64..c25f77974e9 100644
--- a/app/workers/build_trace_sections_worker.rb
+++ b/app/workers/build_trace_sections_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class BuildTraceSectionsWorker
+class BuildTraceSectionsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/chaos/cpu_spin_worker.rb b/app/workers/chaos/cpu_spin_worker.rb
index 43a32c3274f..0b565e0d49c 100644
--- a/app/workers/chaos/cpu_spin_worker.rb
+++ b/app/workers/chaos/cpu_spin_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Chaos
-  class CpuSpinWorker
+  class CpuSpinWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include ChaosQueue
 
diff --git a/app/workers/chaos/db_spin_worker.rb b/app/workers/chaos/db_spin_worker.rb
index 217ddabbcb6..099660d440c 100644
--- a/app/workers/chaos/db_spin_worker.rb
+++ b/app/workers/chaos/db_spin_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Chaos
-  class DbSpinWorker
+  class DbSpinWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include ChaosQueue
 
diff --git a/app/workers/chaos/kill_worker.rb b/app/workers/chaos/kill_worker.rb
index 80f04db1be4..3dedd47a1f9 100644
--- a/app/workers/chaos/kill_worker.rb
+++ b/app/workers/chaos/kill_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Chaos
-  class KillWorker
+  class KillWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include ChaosQueue
 
diff --git a/app/workers/chaos/leak_mem_worker.rb b/app/workers/chaos/leak_mem_worker.rb
index 0caa99e0de9..b77d1a20541 100644
--- a/app/workers/chaos/leak_mem_worker.rb
+++ b/app/workers/chaos/leak_mem_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Chaos
-  class LeakMemWorker
+  class LeakMemWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include ChaosQueue
 
diff --git a/app/workers/chaos/sleep_worker.rb b/app/workers/chaos/sleep_worker.rb
index 7c724c4cb4e..6887258e961 100644
--- a/app/workers/chaos/sleep_worker.rb
+++ b/app/workers/chaos/sleep_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Chaos
-  class SleepWorker
+  class SleepWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include ChaosQueue
 
diff --git a/app/workers/chat_notification_worker.rb b/app/workers/chat_notification_worker.rb
index f23c787559f..78d4206ec1a 100644
--- a/app/workers/chat_notification_worker.rb
+++ b/app/workers/chat_notification_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ChatNotificationWorker
+class ChatNotificationWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   TimeoutExceeded = Class.new(StandardError)
diff --git a/app/workers/ci/archive_traces_cron_worker.rb b/app/workers/ci/archive_traces_cron_worker.rb
index c73c7ba2dd8..0171c1d482d 100644
--- a/app/workers/ci/archive_traces_cron_worker.rb
+++ b/app/workers/ci/archive_traces_cron_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class ArchiveTracesCronWorker
+  class ArchiveTracesCronWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include CronjobQueue # rubocop:disable Scalability/CronWorkerContext
 
diff --git a/app/workers/ci/build_prepare_worker.rb b/app/workers/ci/build_prepare_worker.rb
index 20208c18d03..7f640633070 100644
--- a/app/workers/ci/build_prepare_worker.rb
+++ b/app/workers/ci/build_prepare_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class BuildPrepareWorker
+  class BuildPrepareWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include PipelineQueue
 
diff --git a/app/workers/ci/build_schedule_worker.rb b/app/workers/ci/build_schedule_worker.rb
index e34f16f46c2..9231b40978d 100644
--- a/app/workers/ci/build_schedule_worker.rb
+++ b/app/workers/ci/build_schedule_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class BuildScheduleWorker
+  class BuildScheduleWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include PipelineQueue
 
diff --git a/app/workers/ci/build_trace_chunk_flush_worker.rb b/app/workers/ci/build_trace_chunk_flush_worker.rb
index 23a11c28f9b..fe59ba896a4 100644
--- a/app/workers/ci/build_trace_chunk_flush_worker.rb
+++ b/app/workers/ci/build_trace_chunk_flush_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class BuildTraceChunkFlushWorker
+  class BuildTraceChunkFlushWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include PipelineBackgroundQueue
 
diff --git a/app/workers/ci/create_cross_project_pipeline_worker.rb b/app/workers/ci/create_cross_project_pipeline_worker.rb
index 91e9317713e..713d0092b32 100644
--- a/app/workers/ci/create_cross_project_pipeline_worker.rb
+++ b/app/workers/ci/create_cross_project_pipeline_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class CreateCrossProjectPipelineWorker
+  class CreateCrossProjectPipelineWorker # rubocop:disable Scalability/IdempotentWorker
     include ::ApplicationWorker
     include ::PipelineQueue
 
diff --git a/app/workers/ci/pipeline_bridge_status_worker.rb b/app/workers/ci/pipeline_bridge_status_worker.rb
index f196573deaa..e4e9d8480c2 100644
--- a/app/workers/ci/pipeline_bridge_status_worker.rb
+++ b/app/workers/ci/pipeline_bridge_status_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class PipelineBridgeStatusWorker
+  class PipelineBridgeStatusWorker # rubocop:disable Scalability/IdempotentWorker
     include ::ApplicationWorker
     include ::PipelineQueue
 
diff --git a/app/workers/ci/resource_groups/assign_resource_from_resource_group_worker.rb b/app/workers/ci/resource_groups/assign_resource_from_resource_group_worker.rb
index 62233d19516..8063e34a1b8 100644
--- a/app/workers/ci/resource_groups/assign_resource_from_resource_group_worker.rb
+++ b/app/workers/ci/resource_groups/assign_resource_from_resource_group_worker.rb
@@ -2,7 +2,7 @@
 
 module Ci
   module ResourceGroups
-    class AssignResourceFromResourceGroupWorker
+    class AssignResourceFromResourceGroupWorker # rubocop:disable Scalability/IdempotentWorker
       include ApplicationWorker
       include PipelineQueue
 
diff --git a/app/workers/cleanup_container_repository_worker.rb b/app/workers/cleanup_container_repository_worker.rb
index 83397a1dda2..c3fac453e73 100644
--- a/app/workers/cleanup_container_repository_worker.rb
+++ b/app/workers/cleanup_container_repository_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class CleanupContainerRepositoryWorker
+class CleanupContainerRepositoryWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   queue_namespace :container_repository
diff --git a/app/workers/cluster_configure_istio_worker.rb b/app/workers/cluster_configure_istio_worker.rb
index dfdd408f286..ec6bdfbd6b6 100644
--- a/app/workers/cluster_configure_istio_worker.rb
+++ b/app/workers/cluster_configure_istio_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ClusterConfigureIstioWorker
+class ClusterConfigureIstioWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ClusterQueue
 
diff --git a/app/workers/cluster_configure_worker.rb b/app/workers/cluster_configure_worker.rb
index e7a4797e68e..f9364ab7144 100644
--- a/app/workers/cluster_configure_worker.rb
+++ b/app/workers/cluster_configure_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ClusterConfigureWorker
+class ClusterConfigureWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ClusterQueue
 
diff --git a/app/workers/cluster_install_app_worker.rb b/app/workers/cluster_install_app_worker.rb
index 0e075b295dd..002932a0fa5 100644
--- a/app/workers/cluster_install_app_worker.rb
+++ b/app/workers/cluster_install_app_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ClusterInstallAppWorker
+class ClusterInstallAppWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ClusterQueue
   include ClusterApplications
diff --git a/app/workers/cluster_patch_app_worker.rb b/app/workers/cluster_patch_app_worker.rb
index 3f95a764567..f75004aa3e5 100644
--- a/app/workers/cluster_patch_app_worker.rb
+++ b/app/workers/cluster_patch_app_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ClusterPatchAppWorker
+class ClusterPatchAppWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ClusterQueue
   include ClusterApplications
diff --git a/app/workers/cluster_project_configure_worker.rb b/app/workers/cluster_project_configure_worker.rb
index 614029c2b5c..b68df01dc7a 100644
--- a/app/workers/cluster_project_configure_worker.rb
+++ b/app/workers/cluster_project_configure_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ClusterProjectConfigureWorker
+class ClusterProjectConfigureWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ClusterQueue
 
diff --git a/app/workers/cluster_provision_worker.rb b/app/workers/cluster_provision_worker.rb
index c34284319dd..cb750f3021e 100644
--- a/app/workers/cluster_provision_worker.rb
+++ b/app/workers/cluster_provision_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ClusterProvisionWorker
+class ClusterProvisionWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ClusterQueue
 
diff --git a/app/workers/cluster_upgrade_app_worker.rb b/app/workers/cluster_upgrade_app_worker.rb
index cd06f0a2224..99f48415f08 100644
--- a/app/workers/cluster_upgrade_app_worker.rb
+++ b/app/workers/cluster_upgrade_app_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ClusterUpgradeAppWorker
+class ClusterUpgradeAppWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ClusterQueue
   include ClusterApplications
diff --git a/app/workers/cluster_wait_for_app_installation_worker.rb b/app/workers/cluster_wait_for_app_installation_worker.rb
index 7155dc6f835..e098c3b86b5 100644
--- a/app/workers/cluster_wait_for_app_installation_worker.rb
+++ b/app/workers/cluster_wait_for_app_installation_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ClusterWaitForAppInstallationWorker
+class ClusterWaitForAppInstallationWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ClusterQueue
   include ClusterApplications
diff --git a/app/workers/cluster_wait_for_ingress_ip_address_worker.rb b/app/workers/cluster_wait_for_ingress_ip_address_worker.rb
index 14b1651cc72..c7336ee515d 100644
--- a/app/workers/cluster_wait_for_ingress_ip_address_worker.rb
+++ b/app/workers/cluster_wait_for_ingress_ip_address_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ClusterWaitForIngressIpAddressWorker
+class ClusterWaitForIngressIpAddressWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ClusterQueue
   include ClusterApplications
diff --git a/app/workers/clusters/applications/activate_service_worker.rb b/app/workers/clusters/applications/activate_service_worker.rb
index 4f285d55162..abd7f8eaea4 100644
--- a/app/workers/clusters/applications/activate_service_worker.rb
+++ b/app/workers/clusters/applications/activate_service_worker.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Applications
-    class ActivateServiceWorker
+    class ActivateServiceWorker # rubocop:disable Scalability/IdempotentWorker
       include ApplicationWorker
       include ClusterQueue
 
diff --git a/app/workers/clusters/applications/deactivate_service_worker.rb b/app/workers/clusters/applications/deactivate_service_worker.rb
index 2c560cc998c..fecbb6dde45 100644
--- a/app/workers/clusters/applications/deactivate_service_worker.rb
+++ b/app/workers/clusters/applications/deactivate_service_worker.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Applications
-    class DeactivateServiceWorker
+    class DeactivateServiceWorker # rubocop:disable Scalability/IdempotentWorker
       include ApplicationWorker
       include ClusterQueue
 
diff --git a/app/workers/clusters/applications/uninstall_worker.rb b/app/workers/clusters/applications/uninstall_worker.rb
index 6180998c8d9..977a25e8442 100644
--- a/app/workers/clusters/applications/uninstall_worker.rb
+++ b/app/workers/clusters/applications/uninstall_worker.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Applications
-    class UninstallWorker
+    class UninstallWorker # rubocop:disable Scalability/IdempotentWorker
       include ApplicationWorker
       include ClusterQueue
       include ClusterApplications
diff --git a/app/workers/clusters/applications/wait_for_uninstall_app_worker.rb b/app/workers/clusters/applications/wait_for_uninstall_app_worker.rb
index 7907aa8dfff..a486cfa90b7 100644
--- a/app/workers/clusters/applications/wait_for_uninstall_app_worker.rb
+++ b/app/workers/clusters/applications/wait_for_uninstall_app_worker.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Applications
-    class WaitForUninstallAppWorker
+    class WaitForUninstallAppWorker # rubocop:disable Scalability/IdempotentWorker
       include ApplicationWorker
       include ClusterQueue
       include ClusterApplications
diff --git a/app/workers/clusters/cleanup/app_worker.rb b/app/workers/clusters/cleanup/app_worker.rb
index 8b2fddd3164..1d01cec174b 100644
--- a/app/workers/clusters/cleanup/app_worker.rb
+++ b/app/workers/clusters/cleanup/app_worker.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Cleanup
-    class AppWorker
+    class AppWorker # rubocop:disable Scalability/IdempotentWorker
       include ClusterCleanupMethods
 
       def perform(cluster_id, execution_count = 0)
diff --git a/app/workers/clusters/cleanup/project_namespace_worker.rb b/app/workers/clusters/cleanup/project_namespace_worker.rb
index 8a7fbf0fde7..a7a951f2937 100644
--- a/app/workers/clusters/cleanup/project_namespace_worker.rb
+++ b/app/workers/clusters/cleanup/project_namespace_worker.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Cleanup
-    class ProjectNamespaceWorker
+    class ProjectNamespaceWorker # rubocop:disable Scalability/IdempotentWorker
       include ClusterCleanupMethods
 
       def perform(cluster_id, execution_count = 0)
diff --git a/app/workers/clusters/cleanup/service_account_worker.rb b/app/workers/clusters/cleanup/service_account_worker.rb
index 95de56d8ebe..a829d68fb20 100644
--- a/app/workers/clusters/cleanup/service_account_worker.rb
+++ b/app/workers/clusters/cleanup/service_account_worker.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Cleanup
-    class ServiceAccountWorker
+    class ServiceAccountWorker # rubocop:disable Scalability/IdempotentWorker
       include ClusterCleanupMethods
 
       def perform(cluster_id)
diff --git a/app/workers/concerns/worker_attributes.rb b/app/workers/concerns/worker_attributes.rb
index babdb46bb85..55feba673c4 100644
--- a/app/workers/concerns/worker_attributes.rb
+++ b/app/workers/concerns/worker_attributes.rb
@@ -89,6 +89,14 @@ module WorkerAttributes
       worker_attributes[:resource_boundary] || :unknown
     end
 
+    def idempotent!
+      worker_attributes[:idempotent] = true
+    end
+
+    def idempotent?
+      worker_attributes[:idempotent]
+    end
+
     def weight(value)
       worker_attributes[:weight] = value
     end
diff --git a/app/workers/container_expiration_policy_worker.rb b/app/workers/container_expiration_policy_worker.rb
index e07a6546e2d..e1544be5aed 100644
--- a/app/workers/container_expiration_policy_worker.rb
+++ b/app/workers/container_expiration_policy_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ContainerExpirationPolicyWorker
+class ContainerExpirationPolicyWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include CronjobQueue
 
diff --git a/app/workers/create_commit_signature_worker.rb b/app/workers/create_commit_signature_worker.rb
index 027fea3e402..3da21c56eff 100644
--- a/app/workers/create_commit_signature_worker.rb
+++ b/app/workers/create_commit_signature_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class CreateCommitSignatureWorker
+class CreateCommitSignatureWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/create_evidence_worker.rb b/app/workers/create_evidence_worker.rb
index e6fbf59d702..46f211cf3e1 100644
--- a/app/workers/create_evidence_worker.rb
+++ b/app/workers/create_evidence_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class CreateEvidenceWorker
+class CreateEvidenceWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :release_governance
diff --git a/app/workers/create_note_diff_file_worker.rb b/app/workers/create_note_diff_file_worker.rb
index ca200bd17b4..8a1709f04e1 100644
--- a/app/workers/create_note_diff_file_worker.rb
+++ b/app/workers/create_note_diff_file_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class CreateNoteDiffFileWorker
+class CreateNoteDiffFileWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/create_pipeline_worker.rb b/app/workers/create_pipeline_worker.rb
index a75cc643038..ac00fcc5d57 100644
--- a/app/workers/create_pipeline_worker.rb
+++ b/app/workers/create_pipeline_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class CreatePipelineWorker
+class CreatePipelineWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/delete_container_repository_worker.rb b/app/workers/delete_container_repository_worker.rb
index e70b4fb0a58..dbfc273a5ce 100644
--- a/app/workers/delete_container_repository_worker.rb
+++ b/app/workers/delete_container_repository_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class DeleteContainerRepositoryWorker
+class DeleteContainerRepositoryWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExclusiveLeaseGuard
 
diff --git a/app/workers/delete_diff_files_worker.rb b/app/workers/delete_diff_files_worker.rb
index e0c1724f1f7..a6759a9d7c4 100644
--- a/app/workers/delete_diff_files_worker.rb
+++ b/app/workers/delete_diff_files_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class DeleteDiffFilesWorker
+class DeleteDiffFilesWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/delete_merged_branches_worker.rb b/app/workers/delete_merged_branches_worker.rb
index f3d86233c1b..ab3d42e5384 100644
--- a/app/workers/delete_merged_branches_worker.rb
+++ b/app/workers/delete_merged_branches_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class DeleteMergedBranchesWorker
+class DeleteMergedBranchesWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/delete_stored_files_worker.rb b/app/workers/delete_stored_files_worker.rb
index e1e2f66f573..463f26fdd5a 100644
--- a/app/workers/delete_stored_files_worker.rb
+++ b/app/workers/delete_stored_files_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class DeleteStoredFilesWorker
+class DeleteStoredFilesWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category_not_owned!
diff --git a/app/workers/delete_user_worker.rb b/app/workers/delete_user_worker.rb
index 0e49e787d8a..d3b87c133d3 100644
--- a/app/workers/delete_user_worker.rb
+++ b/app/workers/delete_user_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class DeleteUserWorker
+class DeleteUserWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :authentication_and_authorization
diff --git a/app/workers/deployments/finished_worker.rb b/app/workers/deployments/finished_worker.rb
index 6196b032f63..0be420af718 100644
--- a/app/workers/deployments/finished_worker.rb
+++ b/app/workers/deployments/finished_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Deployments
-  class FinishedWorker
+  class FinishedWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
 
     queue_namespace :deployment
diff --git a/app/workers/deployments/forward_deployment_worker.rb b/app/workers/deployments/forward_deployment_worker.rb
index a25b8ca0478..a6f246dbbbd 100644
--- a/app/workers/deployments/forward_deployment_worker.rb
+++ b/app/workers/deployments/forward_deployment_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Deployments
-  class ForwardDeploymentWorker
+  class ForwardDeploymentWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
 
     queue_namespace :deployment
diff --git a/app/workers/deployments/success_worker.rb b/app/workers/deployments/success_worker.rb
index 4a29f1aef52..17f790d2f6f 100644
--- a/app/workers/deployments/success_worker.rb
+++ b/app/workers/deployments/success_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Deployments
-  class SuccessWorker
+  class SuccessWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
 
     queue_namespace :deployment
diff --git a/app/workers/detect_repository_languages_worker.rb b/app/workers/detect_repository_languages_worker.rb
index 954d0f9336b..ef66287a692 100644
--- a/app/workers/detect_repository_languages_worker.rb
+++ b/app/workers/detect_repository_languages_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class DetectRepositoryLanguagesWorker
+class DetectRepositoryLanguagesWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExceptionBacktrace
   include ExclusiveLeaseGuard
diff --git a/app/workers/email_receiver_worker.rb b/app/workers/email_receiver_worker.rb
index c2b1e642604..37398b18aef 100644
--- a/app/workers/email_receiver_worker.rb
+++ b/app/workers/email_receiver_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class EmailReceiverWorker
+class EmailReceiverWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :issue_tracking
diff --git a/app/workers/emails_on_push_worker.rb b/app/workers/emails_on_push_worker.rb
index be66e2b1188..2c546bc3c20 100644
--- a/app/workers/emails_on_push_worker.rb
+++ b/app/workers/emails_on_push_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class EmailsOnPushWorker
+class EmailsOnPushWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   attr_reader :email, :skip_premailer
diff --git a/app/workers/environments/auto_stop_cron_worker.rb b/app/workers/environments/auto_stop_cron_worker.rb
index fdc9490453c..de5e10a0976 100644
--- a/app/workers/environments/auto_stop_cron_worker.rb
+++ b/app/workers/environments/auto_stop_cron_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Environments
-  class AutoStopCronWorker
+  class AutoStopCronWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include CronjobQueue # rubocop:disable Scalability/CronWorkerContext
 
diff --git a/app/workers/error_tracking_issue_link_worker.rb b/app/workers/error_tracking_issue_link_worker.rb
index b306ecc154b..d59abaf8683 100644
--- a/app/workers/error_tracking_issue_link_worker.rb
+++ b/app/workers/error_tracking_issue_link_worker.rb
@@ -5,7 +5,7 @@
 # If a link to a different GitLab issue exists, a new link
 #   will still be created, but will not be visible in Sentry
 #   until the prior link is deleted.
-class ErrorTrackingIssueLinkWorker
+class ErrorTrackingIssueLinkWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExclusiveLeaseGuard
   include Gitlab::Utils::StrongMemoize
diff --git a/app/workers/expire_build_artifacts_worker.rb b/app/workers/expire_build_artifacts_worker.rb
index 07f516a3390..12372961250 100644
--- a/app/workers/expire_build_artifacts_worker.rb
+++ b/app/workers/expire_build_artifacts_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ExpireBuildArtifactsWorker
+class ExpireBuildArtifactsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   # rubocop:disable Scalability/CronWorkerContext
   # This worker does not perform work scoped to a context
diff --git a/app/workers/expire_build_instance_artifacts_worker.rb b/app/workers/expire_build_instance_artifacts_worker.rb
index db5240d5c8e..48fd086f88f 100644
--- a/app/workers/expire_build_instance_artifacts_worker.rb
+++ b/app/workers/expire_build_instance_artifacts_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ExpireBuildInstanceArtifactsWorker
+class ExpireBuildInstanceArtifactsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :continuous_integration
diff --git a/app/workers/expire_job_cache_worker.rb b/app/workers/expire_job_cache_worker.rb
index 0363429587e..1cd5fa5d1c5 100644
--- a/app/workers/expire_job_cache_worker.rb
+++ b/app/workers/expire_job_cache_worker.rb
@@ -6,6 +6,7 @@ class ExpireJobCacheWorker
 
   queue_namespace :pipeline_cache
   latency_sensitive_worker!
+  idempotent!
 
   # rubocop: disable CodeReuse/ActiveRecord
   def perform(job_id)
diff --git a/app/workers/expire_pipeline_cache_worker.rb b/app/workers/expire_pipeline_cache_worker.rb
index 1d204e0a19e..d92141c70cc 100644
--- a/app/workers/expire_pipeline_cache_worker.rb
+++ b/app/workers/expire_pipeline_cache_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ExpirePipelineCacheWorker
+class ExpirePipelineCacheWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/file_hook_worker.rb b/app/workers/file_hook_worker.rb
index 24fc2d75d24..f8cdea54a17 100644
--- a/app/workers/file_hook_worker.rb
+++ b/app/workers/file_hook_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class FileHookWorker
+class FileHookWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   sidekiq_options retry: false
diff --git a/app/workers/git_garbage_collect_worker.rb b/app/workers/git_garbage_collect_worker.rb
index ad119917774..37ca3af517f 100644
--- a/app/workers/git_garbage_collect_worker.rb
+++ b/app/workers/git_garbage_collect_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class GitGarbageCollectWorker
+class GitGarbageCollectWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   sidekiq_options retry: false
diff --git a/app/workers/gitlab/github_import/advance_stage_worker.rb b/app/workers/gitlab/github_import/advance_stage_worker.rb
index 44e69e48694..8c379be2ae4 100644
--- a/app/workers/gitlab/github_import/advance_stage_worker.rb
+++ b/app/workers/gitlab/github_import/advance_stage_worker.rb
@@ -6,7 +6,7 @@ module Gitlab
     # number of jobs to complete, without blocking a thread. Once all jobs have
     # been completed this worker will advance the import process to the next
     # stage.
-    class AdvanceStageWorker
+    class AdvanceStageWorker # rubocop:disable Scalability/IdempotentWorker
       include ApplicationWorker
 
       sidekiq_options dead: false
diff --git a/app/workers/gitlab/github_import/import_diff_note_worker.rb b/app/workers/gitlab/github_import/import_diff_note_worker.rb
index ef2a74c51c5..25fb0375692 100644
--- a/app/workers/gitlab/github_import/import_diff_note_worker.rb
+++ b/app/workers/gitlab/github_import/import_diff_note_worker.rb
@@ -2,7 +2,7 @@
 
 module Gitlab
   module GithubImport
-    class ImportDiffNoteWorker
+    class ImportDiffNoteWorker # rubocop:disable Scalability/IdempotentWorker
       include ObjectImporter
 
       def representation_class
diff --git a/app/workers/gitlab/github_import/import_issue_worker.rb b/app/workers/gitlab/github_import/import_issue_worker.rb
index 1b081ae5966..d9c496e3eb3 100644
--- a/app/workers/gitlab/github_import/import_issue_worker.rb
+++ b/app/workers/gitlab/github_import/import_issue_worker.rb
@@ -2,7 +2,7 @@
 
 module Gitlab
   module GithubImport
-    class ImportIssueWorker
+    class ImportIssueWorker # rubocop:disable Scalability/IdempotentWorker
       include ObjectImporter
 
       def representation_class
diff --git a/app/workers/gitlab/github_import/import_lfs_object_worker.rb b/app/workers/gitlab/github_import/import_lfs_object_worker.rb
index 520c5cb091a..78f78fdb160 100644
--- a/app/workers/gitlab/github_import/import_lfs_object_worker.rb
+++ b/app/workers/gitlab/github_import/import_lfs_object_worker.rb
@@ -2,7 +2,7 @@
 
 module Gitlab
   module GithubImport
-    class ImportLfsObjectWorker
+    class ImportLfsObjectWorker # rubocop:disable Scalability/IdempotentWorker
       include ObjectImporter
 
       def representation_class
diff --git a/app/workers/gitlab/github_import/import_note_worker.rb b/app/workers/gitlab/github_import/import_note_worker.rb
index d2b4c36a5b9..d0f97a15afd 100644
--- a/app/workers/gitlab/github_import/import_note_worker.rb
+++ b/app/workers/gitlab/github_import/import_note_worker.rb
@@ -2,7 +2,7 @@
 
 module Gitlab
   module GithubImport
-    class ImportNoteWorker
+    class ImportNoteWorker # rubocop:disable Scalability/IdempotentWorker
       include ObjectImporter
 
       def representation_class
diff --git a/app/workers/gitlab/github_import/import_pull_request_worker.rb b/app/workers/gitlab/github_import/import_pull_request_worker.rb
index 62a6da152a3..ec806ad170b 100644
--- a/app/workers/gitlab/github_import/import_pull_request_worker.rb
+++ b/app/workers/gitlab/github_import/import_pull_request_worker.rb
@@ -2,7 +2,7 @@
 
 module Gitlab
   module GithubImport
-    class ImportPullRequestWorker
+    class ImportPullRequestWorker # rubocop:disable Scalability/IdempotentWorker
       include ObjectImporter
 
       def representation_class
diff --git a/app/workers/gitlab/github_import/refresh_import_jid_worker.rb b/app/workers/gitlab/github_import/refresh_import_jid_worker.rb
index 76723e4a61f..0ddd893d0d1 100644
--- a/app/workers/gitlab/github_import/refresh_import_jid_worker.rb
+++ b/app/workers/gitlab/github_import/refresh_import_jid_worker.rb
@@ -2,7 +2,7 @@
 
 module Gitlab
   module GithubImport
-    class RefreshImportJidWorker
+    class RefreshImportJidWorker # rubocop:disable Scalability/IdempotentWorker
       include ApplicationWorker
       include GithubImport::Queue
 
diff --git a/app/workers/gitlab/github_import/stage/finish_import_worker.rb b/app/workers/gitlab/github_import/stage/finish_import_worker.rb
index ee64f62637e..73699a74a4a 100644
--- a/app/workers/gitlab/github_import/stage/finish_import_worker.rb
+++ b/app/workers/gitlab/github_import/stage/finish_import_worker.rb
@@ -3,7 +3,7 @@
 module Gitlab
   module GithubImport
     module Stage
-      class FinishImportWorker
+      class FinishImportWorker # rubocop:disable Scalability/IdempotentWorker
         include ApplicationWorker
         include GithubImport::Queue
         include StageMethods
diff --git a/app/workers/gitlab/github_import/stage/import_base_data_worker.rb b/app/workers/gitlab/github_import/stage/import_base_data_worker.rb
index ccfed2ae187..11c2a2ac9b4 100644
--- a/app/workers/gitlab/github_import/stage/import_base_data_worker.rb
+++ b/app/workers/gitlab/github_import/stage/import_base_data_worker.rb
@@ -3,7 +3,7 @@
 module Gitlab
   module GithubImport
     module Stage
-      class ImportBaseDataWorker
+      class ImportBaseDataWorker # rubocop:disable Scalability/IdempotentWorker
         include ApplicationWorker
         include GithubImport::Queue
         include StageMethods
diff --git a/app/workers/gitlab/github_import/stage/import_issues_and_diff_notes_worker.rb b/app/workers/gitlab/github_import/stage/import_issues_and_diff_notes_worker.rb
index 7007754ff2e..68b6e159fa4 100644
--- a/app/workers/gitlab/github_import/stage/import_issues_and_diff_notes_worker.rb
+++ b/app/workers/gitlab/github_import/stage/import_issues_and_diff_notes_worker.rb
@@ -3,7 +3,7 @@
 module Gitlab
   module GithubImport
     module Stage
-      class ImportIssuesAndDiffNotesWorker
+      class ImportIssuesAndDiffNotesWorker # rubocop:disable Scalability/IdempotentWorker
         include ApplicationWorker
         include GithubImport::Queue
         include StageMethods
diff --git a/app/workers/gitlab/github_import/stage/import_lfs_objects_worker.rb b/app/workers/gitlab/github_import/stage/import_lfs_objects_worker.rb
index 29257603a9d..a19df399969 100644
--- a/app/workers/gitlab/github_import/stage/import_lfs_objects_worker.rb
+++ b/app/workers/gitlab/github_import/stage/import_lfs_objects_worker.rb
@@ -3,7 +3,7 @@
 module Gitlab
   module GithubImport
     module Stage
-      class ImportLfsObjectsWorker
+      class ImportLfsObjectsWorker # rubocop:disable Scalability/IdempotentWorker
         include ApplicationWorker
         include GithubImport::Queue
         include StageMethods
diff --git a/app/workers/gitlab/github_import/stage/import_notes_worker.rb b/app/workers/gitlab/github_import/stage/import_notes_worker.rb
index ccf0013180d..49b9821cd45 100644
--- a/app/workers/gitlab/github_import/stage/import_notes_worker.rb
+++ b/app/workers/gitlab/github_import/stage/import_notes_worker.rb
@@ -3,7 +3,7 @@
 module Gitlab
   module GithubImport
     module Stage
-      class ImportNotesWorker
+      class ImportNotesWorker # rubocop:disable Scalability/IdempotentWorker
         include ApplicationWorker
         include GithubImport::Queue
         include StageMethods
diff --git a/app/workers/gitlab/github_import/stage/import_pull_requests_worker.rb b/app/workers/gitlab/github_import/stage/import_pull_requests_worker.rb
index 37a7a7f4ba0..3299db5653b 100644
--- a/app/workers/gitlab/github_import/stage/import_pull_requests_worker.rb
+++ b/app/workers/gitlab/github_import/stage/import_pull_requests_worker.rb
@@ -3,7 +3,7 @@
 module Gitlab
   module GithubImport
     module Stage
-      class ImportPullRequestsWorker
+      class ImportPullRequestsWorker # rubocop:disable Scalability/IdempotentWorker
         include ApplicationWorker
         include GithubImport::Queue
         include StageMethods
diff --git a/app/workers/gitlab/github_import/stage/import_repository_worker.rb b/app/workers/gitlab/github_import/stage/import_repository_worker.rb
index b5e30470070..cb9ef1cd198 100644
--- a/app/workers/gitlab/github_import/stage/import_repository_worker.rb
+++ b/app/workers/gitlab/github_import/stage/import_repository_worker.rb
@@ -3,7 +3,7 @@
 module Gitlab
   module GithubImport
     module Stage
-      class ImportRepositoryWorker
+      class ImportRepositoryWorker # rubocop:disable Scalability/IdempotentWorker
         include ApplicationWorker
         include GithubImport::Queue
         include StageMethods
diff --git a/app/workers/gitlab/phabricator_import/base_worker.rb b/app/workers/gitlab/phabricator_import/base_worker.rb
index faae71d4627..82ef9e825f9 100644
--- a/app/workers/gitlab/phabricator_import/base_worker.rb
+++ b/app/workers/gitlab/phabricator_import/base_worker.rb
@@ -18,7 +18,7 @@
 # - It marks the import as finished when all remaining jobs are done
 module Gitlab
   module PhabricatorImport
-    class BaseWorker
+    class BaseWorker # rubocop:disable Scalability/IdempotentWorker
       include WorkerAttributes
       include Gitlab::ExclusiveLeaseHelpers
 
diff --git a/app/workers/gitlab/phabricator_import/import_tasks_worker.rb b/app/workers/gitlab/phabricator_import/import_tasks_worker.rb
index b5d9e80797b..1b1d7b35dd5 100644
--- a/app/workers/gitlab/phabricator_import/import_tasks_worker.rb
+++ b/app/workers/gitlab/phabricator_import/import_tasks_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 module Gitlab
   module PhabricatorImport
-    class ImportTasksWorker < BaseWorker
+    class ImportTasksWorker < BaseWorker # rubocop:disable Scalability/IdempotentWorker
       include ApplicationWorker
       include ProjectImportOptions # This marks the project as failed after too many tries
 
diff --git a/app/workers/gitlab_shell_worker.rb b/app/workers/gitlab_shell_worker.rb
index bd2225e6d7c..f9b5a7d99ed 100644
--- a/app/workers/gitlab_shell_worker.rb
+++ b/app/workers/gitlab_shell_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class GitlabShellWorker
+class GitlabShellWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include Gitlab::ShellAdapter
 
diff --git a/app/workers/gitlab_usage_ping_worker.rb b/app/workers/gitlab_usage_ping_worker.rb
index 002542e26f4..9f0cf1728dd 100644
--- a/app/workers/gitlab_usage_ping_worker.rb
+++ b/app/workers/gitlab_usage_ping_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class GitlabUsagePingWorker
+class GitlabUsagePingWorker # rubocop:disable Scalability/IdempotentWorker
   LEASE_TIMEOUT = 86400
 
   include ApplicationWorker
diff --git a/app/workers/group_destroy_worker.rb b/app/workers/group_destroy_worker.rb
index fc751f8b612..d80a2dad7d9 100644
--- a/app/workers/group_destroy_worker.rb
+++ b/app/workers/group_destroy_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class GroupDestroyWorker
+class GroupDestroyWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExceptionBacktrace
 
diff --git a/app/workers/group_export_worker.rb b/app/workers/group_export_worker.rb
index a2d34e8c8bf..3e0390429d6 100644
--- a/app/workers/group_export_worker.rb
+++ b/app/workers/group_export_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class GroupExportWorker
+class GroupExportWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExceptionBacktrace
 
diff --git a/app/workers/group_import_worker.rb b/app/workers/group_import_worker.rb
index f283eab5814..b6fc5afc28c 100644
--- a/app/workers/group_import_worker.rb
+++ b/app/workers/group_import_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class GroupImportWorker
+class GroupImportWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExceptionBacktrace
 
diff --git a/app/workers/hashed_storage/base_worker.rb b/app/workers/hashed_storage/base_worker.rb
index 1ab2108f6bb..372440996d9 100644
--- a/app/workers/hashed_storage/base_worker.rb
+++ b/app/workers/hashed_storage/base_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module HashedStorage
-  class BaseWorker
+  class BaseWorker # rubocop:disable Scalability/IdempotentWorker
     include ExclusiveLeaseGuard
     include WorkerAttributes
 
diff --git a/app/workers/hashed_storage/migrator_worker.rb b/app/workers/hashed_storage/migrator_worker.rb
index 72a3faec5f4..5cbdfcb0602 100644
--- a/app/workers/hashed_storage/migrator_worker.rb
+++ b/app/workers/hashed_storage/migrator_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module HashedStorage
-  class MigratorWorker
+  class MigratorWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
 
     queue_namespace :hashed_storage
diff --git a/app/workers/hashed_storage/project_migrate_worker.rb b/app/workers/hashed_storage/project_migrate_worker.rb
index 0174467923d..3ce60ce7eb6 100644
--- a/app/workers/hashed_storage/project_migrate_worker.rb
+++ b/app/workers/hashed_storage/project_migrate_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module HashedStorage
-  class ProjectMigrateWorker < BaseWorker
+  class ProjectMigrateWorker < BaseWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
 
     queue_namespace :hashed_storage
diff --git a/app/workers/hashed_storage/project_rollback_worker.rb b/app/workers/hashed_storage/project_rollback_worker.rb
index 55e1d7ab23e..17b3cca83e1 100644
--- a/app/workers/hashed_storage/project_rollback_worker.rb
+++ b/app/workers/hashed_storage/project_rollback_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module HashedStorage
-  class ProjectRollbackWorker < BaseWorker
+  class ProjectRollbackWorker < BaseWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
 
     queue_namespace :hashed_storage
diff --git a/app/workers/hashed_storage/rollbacker_worker.rb b/app/workers/hashed_storage/rollbacker_worker.rb
index 8babdcfb96d..a220d3b2226 100644
--- a/app/workers/hashed_storage/rollbacker_worker.rb
+++ b/app/workers/hashed_storage/rollbacker_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module HashedStorage
-  class RollbackerWorker
+  class RollbackerWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
 
     queue_namespace :hashed_storage
diff --git a/app/workers/import_export_project_cleanup_worker.rb b/app/workers/import_export_project_cleanup_worker.rb
index ae236fa1fcd..dd345434d08 100644
--- a/app/workers/import_export_project_cleanup_worker.rb
+++ b/app/workers/import_export_project_cleanup_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ImportExportProjectCleanupWorker
+class ImportExportProjectCleanupWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   # rubocop:disable Scalability/CronWorkerContext
   # This worker does not perform work scoped to a context
diff --git a/app/workers/import_issues_csv_worker.rb b/app/workers/import_issues_csv_worker.rb
index 7c5584146ca..c7b5f8cd0a7 100644
--- a/app/workers/import_issues_csv_worker.rb
+++ b/app/workers/import_issues_csv_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ImportIssuesCsvWorker
+class ImportIssuesCsvWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :issue_tracking
diff --git a/app/workers/incident_management/process_alert_worker.rb b/app/workers/incident_management/process_alert_worker.rb
index f3d5bc5c66b..8d4294cc231 100644
--- a/app/workers/incident_management/process_alert_worker.rb
+++ b/app/workers/incident_management/process_alert_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module IncidentManagement
-  class ProcessAlertWorker
+  class ProcessAlertWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
 
     queue_namespace :incident_management
diff --git a/app/workers/invalid_gpg_signature_update_worker.rb b/app/workers/invalid_gpg_signature_update_worker.rb
index e1c2eefbf0f..1fd959c8763 100644
--- a/app/workers/invalid_gpg_signature_update_worker.rb
+++ b/app/workers/invalid_gpg_signature_update_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class InvalidGpgSignatureUpdateWorker
+class InvalidGpgSignatureUpdateWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/irker_worker.rb b/app/workers/irker_worker.rb
index a133ed6ed1b..91ab0d69ad1 100644
--- a/app/workers/irker_worker.rb
+++ b/app/workers/irker_worker.rb
@@ -3,7 +3,7 @@
 require 'json'
 require 'socket'
 
-class IrkerWorker
+class IrkerWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :integrations
diff --git a/app/workers/issue_due_scheduler_worker.rb b/app/workers/issue_due_scheduler_worker.rb
index 59027907284..d735295d046 100644
--- a/app/workers/issue_due_scheduler_worker.rb
+++ b/app/workers/issue_due_scheduler_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class IssueDueSchedulerWorker
+class IssueDueSchedulerWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include CronjobQueue # rubocop:disable Scalability/CronWorkerContext
 
diff --git a/app/workers/mail_scheduler/issue_due_worker.rb b/app/workers/mail_scheduler/issue_due_worker.rb
index 6df816de71f..309d3e13477 100644
--- a/app/workers/mail_scheduler/issue_due_worker.rb
+++ b/app/workers/mail_scheduler/issue_due_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module MailScheduler
-  class IssueDueWorker
+  class IssueDueWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include MailSchedulerQueue
 
diff --git a/app/workers/mail_scheduler/notification_service_worker.rb b/app/workers/mail_scheduler/notification_service_worker.rb
index ec659e39b24..691af2a724d 100644
--- a/app/workers/mail_scheduler/notification_service_worker.rb
+++ b/app/workers/mail_scheduler/notification_service_worker.rb
@@ -3,7 +3,7 @@
 require 'active_job/arguments'
 
 module MailScheduler
-  class NotificationServiceWorker
+  class NotificationServiceWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include MailSchedulerQueue
 
diff --git a/app/workers/merge_request_mergeability_check_worker.rb b/app/workers/merge_request_mergeability_check_worker.rb
index ed35284b66c..a26c1a886f6 100644
--- a/app/workers/merge_request_mergeability_check_worker.rb
+++ b/app/workers/merge_request_mergeability_check_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class MergeRequestMergeabilityCheckWorker
+class MergeRequestMergeabilityCheckWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/merge_worker.rb b/app/workers/merge_worker.rb
index 48bc205113f..a7b926e143f 100644
--- a/app/workers/merge_worker.rb
+++ b/app/workers/merge_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class MergeWorker
+class MergeWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/migrate_external_diffs_worker.rb b/app/workers/migrate_external_diffs_worker.rb
index d248e2b5500..0a95f40aa8f 100644
--- a/app/workers/migrate_external_diffs_worker.rb
+++ b/app/workers/migrate_external_diffs_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class MigrateExternalDiffsWorker
+class MigrateExternalDiffsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/namespaceless_project_destroy_worker.rb b/app/workers/namespaceless_project_destroy_worker.rb
index 113afc268f2..1c8054d8fbd 100644
--- a/app/workers/namespaceless_project_destroy_worker.rb
+++ b/app/workers/namespaceless_project_destroy_worker.rb
@@ -6,7 +6,7 @@
 # used to belong to. Projects in this state should be rare.
 # The worker will reject doing anything for projects that *do* have a
 # namespace. For those use ProjectDestroyWorker instead.
-class NamespacelessProjectDestroyWorker
+class NamespacelessProjectDestroyWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExceptionBacktrace
 
diff --git a/app/workers/namespaces/prune_aggregation_schedules_worker.rb b/app/workers/namespaces/prune_aggregation_schedules_worker.rb
index aeb5aa37a10..b94c8b7b4ba 100644
--- a/app/workers/namespaces/prune_aggregation_schedules_worker.rb
+++ b/app/workers/namespaces/prune_aggregation_schedules_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Namespaces
-  class PruneAggregationSchedulesWorker
+  class PruneAggregationSchedulesWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include CronjobQueue # rubocop:disable Scalability/CronWorkerContext
 
diff --git a/app/workers/namespaces/root_statistics_worker.rb b/app/workers/namespaces/root_statistics_worker.rb
index fd772c8cff6..5fceeb8e03d 100644
--- a/app/workers/namespaces/root_statistics_worker.rb
+++ b/app/workers/namespaces/root_statistics_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Namespaces
-  class RootStatisticsWorker
+  class RootStatisticsWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
 
     queue_namespace :update_namespace_statistics
diff --git a/app/workers/namespaces/schedule_aggregation_worker.rb b/app/workers/namespaces/schedule_aggregation_worker.rb
index 87e135fbf21..60210e2f5a7 100644
--- a/app/workers/namespaces/schedule_aggregation_worker.rb
+++ b/app/workers/namespaces/schedule_aggregation_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Namespaces
-  class ScheduleAggregationWorker
+  class ScheduleAggregationWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
 
     queue_namespace :update_namespace_statistics
diff --git a/app/workers/new_issue_worker.rb b/app/workers/new_issue_worker.rb
index d696165b447..ded5104c708 100644
--- a/app/workers/new_issue_worker.rb
+++ b/app/workers/new_issue_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class NewIssueWorker
+class NewIssueWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include NewIssuable
 
diff --git a/app/workers/new_merge_request_worker.rb b/app/workers/new_merge_request_worker.rb
index e31ddae1f13..3b101435f7a 100644
--- a/app/workers/new_merge_request_worker.rb
+++ b/app/workers/new_merge_request_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class NewMergeRequestWorker
+class NewMergeRequestWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include NewIssuable
 
diff --git a/app/workers/new_note_worker.rb b/app/workers/new_note_worker.rb
index b446e376007..af1cef432eb 100644
--- a/app/workers/new_note_worker.rb
+++ b/app/workers/new_note_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class NewNoteWorker
+class NewNoteWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :issue_tracking
diff --git a/app/workers/new_release_worker.rb b/app/workers/new_release_worker.rb
index edfdb2d7aff..3c19e5f3d2b 100644
--- a/app/workers/new_release_worker.rb
+++ b/app/workers/new_release_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class NewReleaseWorker
+class NewReleaseWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   queue_namespace :notifications
diff --git a/app/workers/object_pool/create_worker.rb b/app/workers/object_pool/create_worker.rb
index 135b99886dc..cf87ad95077 100644
--- a/app/workers/object_pool/create_worker.rb
+++ b/app/workers/object_pool/create_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module ObjectPool
-  class CreateWorker
+  class CreateWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include ObjectPoolQueue
     include ExclusiveLeaseGuard
diff --git a/app/workers/object_pool/destroy_worker.rb b/app/workers/object_pool/destroy_worker.rb
index ca00d467d9b..d42cee59d03 100644
--- a/app/workers/object_pool/destroy_worker.rb
+++ b/app/workers/object_pool/destroy_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module ObjectPool
-  class DestroyWorker
+  class DestroyWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include ObjectPoolQueue
 
diff --git a/app/workers/object_pool/join_worker.rb b/app/workers/object_pool/join_worker.rb
index ddd002eabb8..f1008d3be83 100644
--- a/app/workers/object_pool/join_worker.rb
+++ b/app/workers/object_pool/join_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module ObjectPool
-  class JoinWorker
+  class JoinWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include ObjectPoolQueue
 
diff --git a/app/workers/object_pool/schedule_join_worker.rb b/app/workers/object_pool/schedule_join_worker.rb
index 647a8b72435..c00bb2967f2 100644
--- a/app/workers/object_pool/schedule_join_worker.rb
+++ b/app/workers/object_pool/schedule_join_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module ObjectPool
-  class ScheduleJoinWorker
+  class ScheduleJoinWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include ObjectPoolQueue
 
diff --git a/app/workers/object_storage/background_move_worker.rb b/app/workers/object_storage/background_move_worker.rb
index 55f8e1c3ede..7b0a7c7ec58 100644
--- a/app/workers/object_storage/background_move_worker.rb
+++ b/app/workers/object_storage/background_move_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module ObjectStorage
-  class BackgroundMoveWorker
+  class BackgroundMoveWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include ObjectStorageQueue
 
diff --git a/app/workers/object_storage/migrate_uploads_worker.rb b/app/workers/object_storage/migrate_uploads_worker.rb
index 01e6fdb2d3e..d9d21f2cb7e 100644
--- a/app/workers/object_storage/migrate_uploads_worker.rb
+++ b/app/workers/object_storage/migrate_uploads_worker.rb
@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+# rubocop:disable Scalability/IdempotentWorker
 module ObjectStorage
   class MigrateUploadsWorker
     include ApplicationWorker
@@ -137,3 +138,4 @@ module ObjectStorage
     end
   end
 end
+# rubocop:enable Scalability/IdempotentWorker
diff --git a/app/workers/pages_domain_removal_cron_worker.rb b/app/workers/pages_domain_removal_cron_worker.rb
index 1c96dd6ad8c..cb24441d2f7 100644
--- a/app/workers/pages_domain_removal_cron_worker.rb
+++ b/app/workers/pages_domain_removal_cron_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PagesDomainRemovalCronWorker
+class PagesDomainRemovalCronWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include CronjobQueue
 
diff --git a/app/workers/pages_domain_ssl_renewal_cron_worker.rb b/app/workers/pages_domain_ssl_renewal_cron_worker.rb
index c1201b935d1..fe6d516d3cf 100644
--- a/app/workers/pages_domain_ssl_renewal_cron_worker.rb
+++ b/app/workers/pages_domain_ssl_renewal_cron_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PagesDomainSslRenewalCronWorker
+class PagesDomainSslRenewalCronWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include CronjobQueue
 
diff --git a/app/workers/pages_domain_ssl_renewal_worker.rb b/app/workers/pages_domain_ssl_renewal_worker.rb
index 4db7d22ef7e..561fd59d471 100644
--- a/app/workers/pages_domain_ssl_renewal_worker.rb
+++ b/app/workers/pages_domain_ssl_renewal_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PagesDomainSslRenewalWorker
+class PagesDomainSslRenewalWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :pages
diff --git a/app/workers/pages_domain_verification_cron_worker.rb b/app/workers/pages_domain_verification_cron_worker.rb
index b06aa65a8e5..a30f0b981d8 100644
--- a/app/workers/pages_domain_verification_cron_worker.rb
+++ b/app/workers/pages_domain_verification_cron_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PagesDomainVerificationCronWorker
+class PagesDomainVerificationCronWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include CronjobQueue
 
diff --git a/app/workers/pages_domain_verification_worker.rb b/app/workers/pages_domain_verification_worker.rb
index b0888036498..1b4d9d3994c 100644
--- a/app/workers/pages_domain_verification_worker.rb
+++ b/app/workers/pages_domain_verification_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PagesDomainVerificationWorker
+class PagesDomainVerificationWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :pages
diff --git a/app/workers/pages_worker.rb b/app/workers/pages_worker.rb
index 484d9053849..875f17282f9 100644
--- a/app/workers/pages_worker.rb
+++ b/app/workers/pages_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PagesWorker
+class PagesWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   sidekiq_options retry: 3
diff --git a/app/workers/personal_access_tokens/expiring_worker.rb b/app/workers/personal_access_tokens/expiring_worker.rb
index 84f7ce9d5d7..86240f827fc 100644
--- a/app/workers/personal_access_tokens/expiring_worker.rb
+++ b/app/workers/personal_access_tokens/expiring_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module PersonalAccessTokens
-  class ExpiringWorker
+  class ExpiringWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include CronjobQueue
 
diff --git a/app/workers/pipeline_hooks_worker.rb b/app/workers/pipeline_hooks_worker.rb
index 04abc9c88fd..3fa0c5ab9af 100644
--- a/app/workers/pipeline_hooks_worker.rb
+++ b/app/workers/pipeline_hooks_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PipelineHooksWorker
+class PipelineHooksWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/pipeline_metrics_worker.rb b/app/workers/pipeline_metrics_worker.rb
index 3830522aaa1..65a5a94ed8a 100644
--- a/app/workers/pipeline_metrics_worker.rb
+++ b/app/workers/pipeline_metrics_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PipelineMetricsWorker
+class PipelineMetricsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/pipeline_notification_worker.rb b/app/workers/pipeline_notification_worker.rb
index 62ecbc8a047..e9081cc416f 100644
--- a/app/workers/pipeline_notification_worker.rb
+++ b/app/workers/pipeline_notification_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PipelineNotificationWorker
+class PipelineNotificationWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/pipeline_process_worker.rb b/app/workers/pipeline_process_worker.rb
index 200f3619332..2f8ab0d6202 100644
--- a/app/workers/pipeline_process_worker.rb
+++ b/app/workers/pipeline_process_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PipelineProcessWorker
+class PipelineProcessWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/pipeline_schedule_worker.rb b/app/workers/pipeline_schedule_worker.rb
index 8b326b9dbb6..d81b978f9b0 100644
--- a/app/workers/pipeline_schedule_worker.rb
+++ b/app/workers/pipeline_schedule_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PipelineScheduleWorker
+class PipelineScheduleWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include CronjobQueue
 
diff --git a/app/workers/pipeline_success_worker.rb b/app/workers/pipeline_success_worker.rb
index 5c24f00e0c3..3b4ab461ae7 100644
--- a/app/workers/pipeline_success_worker.rb
+++ b/app/workers/pipeline_success_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PipelineSuccessWorker
+class PipelineSuccessWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/pipeline_update_worker.rb b/app/workers/pipeline_update_worker.rb
index 0321ea5a6ce..b170781202a 100644
--- a/app/workers/pipeline_update_worker.rb
+++ b/app/workers/pipeline_update_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PipelineUpdateWorker
+class PipelineUpdateWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/post_receive.rb b/app/workers/post_receive.rb
index d5038f1152b..f0fd3c9a808 100644
--- a/app/workers/post_receive.rb
+++ b/app/workers/post_receive.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PostReceive
+class PostReceive # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/process_commit_worker.rb b/app/workers/process_commit_worker.rb
index ca2896946c9..d604ac12e8a 100644
--- a/app/workers/process_commit_worker.rb
+++ b/app/workers/process_commit_worker.rb
@@ -7,7 +7,7 @@
 # result of this the workload of this worker should be kept to a bare minimum.
 # Consider using an extra worker if you need to add any extra (and potentially
 # slow) processing of commits.
-class ProcessCommitWorker
+class ProcessCommitWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/project_cache_worker.rb b/app/workers/project_cache_worker.rb
index ae1d57aa124..fc79a988c8b 100644
--- a/app/workers/project_cache_worker.rb
+++ b/app/workers/project_cache_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Worker for updating any project specific caches.
-class ProjectCacheWorker
+class ProjectCacheWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   latency_sensitive_worker!
diff --git a/app/workers/project_daily_statistics_worker.rb b/app/workers/project_daily_statistics_worker.rb
index 19c2fd67763..c60bee0ffdc 100644
--- a/app/workers/project_daily_statistics_worker.rb
+++ b/app/workers/project_daily_statistics_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectDailyStatisticsWorker
+class ProjectDailyStatisticsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/project_destroy_worker.rb b/app/workers/project_destroy_worker.rb
index 1d20837faa2..b3e7996f4a4 100644
--- a/app/workers/project_destroy_worker.rb
+++ b/app/workers/project_destroy_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectDestroyWorker
+class ProjectDestroyWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExceptionBacktrace
 
diff --git a/app/workers/project_export_worker.rb b/app/workers/project_export_worker.rb
index 4d2cc3cd32d..eefba6d25c7 100644
--- a/app/workers/project_export_worker.rb
+++ b/app/workers/project_export_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectExportWorker
+class ProjectExportWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExceptionBacktrace
 
diff --git a/app/workers/project_service_worker.rb b/app/workers/project_service_worker.rb
index 38a2a7414a5..84c3a3e52d0 100644
--- a/app/workers/project_service_worker.rb
+++ b/app/workers/project_service_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectServiceWorker
+class ProjectServiceWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   sidekiq_options dead: false
diff --git a/app/workers/propagate_service_template_worker.rb b/app/workers/propagate_service_template_worker.rb
index 73a2b453207..f3a6bda1821 100644
--- a/app/workers/propagate_service_template_worker.rb
+++ b/app/workers/propagate_service_template_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Worker for updating any project specific caches.
-class PropagateServiceTemplateWorker
+class PropagateServiceTemplateWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/prune_old_events_worker.rb b/app/workers/prune_old_events_worker.rb
index 541a17c0fcf..330de4c7cba 100644
--- a/app/workers/prune_old_events_worker.rb
+++ b/app/workers/prune_old_events_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PruneOldEventsWorker
+class PruneOldEventsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   # rubocop:disable Scalability/CronWorkerContext
   # This worker does not perform work scoped to a context
diff --git a/app/workers/prune_web_hook_logs_worker.rb b/app/workers/prune_web_hook_logs_worker.rb
index dd4f16a69da..a8e81a24ecd 100644
--- a/app/workers/prune_web_hook_logs_worker.rb
+++ b/app/workers/prune_web_hook_logs_worker.rb
@@ -2,7 +2,7 @@
 
 # Worker that deletes a fixed number of outdated rows from the "web_hook_logs"
 # table.
-class PruneWebHookLogsWorker
+class PruneWebHookLogsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   # rubocop:disable Scalability/CronWorkerContext
   # This worker does not perform work scoped to a context
diff --git a/app/workers/reactive_caching_worker.rb b/app/workers/reactive_caching_worker.rb
index 6f82ad83137..bcaeaec5709 100644
--- a/app/workers/reactive_caching_worker.rb
+++ b/app/workers/reactive_caching_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ReactiveCachingWorker
+class ReactiveCachingWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category_not_owned!
diff --git a/app/workers/rebase_worker.rb b/app/workers/rebase_worker.rb
index ddf5c31a1c2..2e13af5e0aa 100644
--- a/app/workers/rebase_worker.rb
+++ b/app/workers/rebase_worker.rb
@@ -2,7 +2,7 @@
 
 # The RebaseWorker must be wrapped in important concurrency code, so should only
 # be scheduled via MergeRequest#rebase_async
-class RebaseWorker
+class RebaseWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/remote_mirror_notification_worker.rb b/app/workers/remote_mirror_notification_worker.rb
index 706131d4e4b..33f5002014d 100644
--- a/app/workers/remote_mirror_notification_worker.rb
+++ b/app/workers/remote_mirror_notification_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RemoteMirrorNotificationWorker
+class RemoteMirrorNotificationWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/remove_expired_group_links_worker.rb b/app/workers/remove_expired_group_links_worker.rb
index db35dfb3ca8..8226f22837c 100644
--- a/app/workers/remove_expired_group_links_worker.rb
+++ b/app/workers/remove_expired_group_links_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RemoveExpiredGroupLinksWorker
+class RemoveExpiredGroupLinksWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include CronjobQueue # rubocop:disable Scalability/CronWorkerContext
 
diff --git a/app/workers/remove_expired_members_worker.rb b/app/workers/remove_expired_members_worker.rb
index 278adee98e9..f56a6cd9fa2 100644
--- a/app/workers/remove_expired_members_worker.rb
+++ b/app/workers/remove_expired_members_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RemoveExpiredMembersWorker
+class RemoveExpiredMembersWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include CronjobQueue # rubocop:disable Scalability/CronWorkerContext
 
diff --git a/app/workers/remove_unreferenced_lfs_objects_worker.rb b/app/workers/remove_unreferenced_lfs_objects_worker.rb
index 5e3998f3915..76ab23ebbd5 100644
--- a/app/workers/remove_unreferenced_lfs_objects_worker.rb
+++ b/app/workers/remove_unreferenced_lfs_objects_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RemoveUnreferencedLfsObjectsWorker
+class RemoveUnreferencedLfsObjectsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   # rubocop:disable Scalability/CronWorkerContext
   # This worker does not perform work scoped to a context
diff --git a/app/workers/repository_archive_cache_worker.rb b/app/workers/repository_archive_cache_worker.rb
index 76e08a80c15..84f61a60953 100644
--- a/app/workers/repository_archive_cache_worker.rb
+++ b/app/workers/repository_archive_cache_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RepositoryArchiveCacheWorker
+class RepositoryArchiveCacheWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   # rubocop:disable Scalability/CronWorkerContext
   # This worker does not perform work scoped to a context
diff --git a/app/workers/repository_check/batch_worker.rb b/app/workers/repository_check/batch_worker.rb
index 4091c30f498..3e5e6a25228 100644
--- a/app/workers/repository_check/batch_worker.rb
+++ b/app/workers/repository_check/batch_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module RepositoryCheck
-  class BatchWorker
+  class BatchWorker # rubocop:disable Scalability/IdempotentWorker
     prepend_if_ee('::EE::RepositoryCheck::BatchWorker') # rubocop: disable Cop/InjectEnterpriseEditionModule
 
     include ApplicationWorker
diff --git a/app/workers/repository_check/clear_worker.rb b/app/workers/repository_check/clear_worker.rb
index 01964c69fb2..1689b9bf251 100644
--- a/app/workers/repository_check/clear_worker.rb
+++ b/app/workers/repository_check/clear_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module RepositoryCheck
-  class ClearWorker
+  class ClearWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include RepositoryCheckQueue
 
diff --git a/app/workers/repository_check/dispatch_worker.rb b/app/workers/repository_check/dispatch_worker.rb
index f68be8832eb..d7a145011fa 100644
--- a/app/workers/repository_check/dispatch_worker.rb
+++ b/app/workers/repository_check/dispatch_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module RepositoryCheck
-  class DispatchWorker
+  class DispatchWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     # rubocop:disable Scalability/CronWorkerContext
     # This worker does not perform work scoped to a context
diff --git a/app/workers/repository_check/single_repository_worker.rb b/app/workers/repository_check/single_repository_worker.rb
index cadb1de356c..b25a20b3eff 100644
--- a/app/workers/repository_check/single_repository_worker.rb
+++ b/app/workers/repository_check/single_repository_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module RepositoryCheck
-  class SingleRepositoryWorker
+  class SingleRepositoryWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include RepositoryCheckQueue
 
diff --git a/app/workers/repository_cleanup_worker.rb b/app/workers/repository_cleanup_worker.rb
index dd2cbd42d1f..33b7223dd95 100644
--- a/app/workers/repository_cleanup_worker.rb
+++ b/app/workers/repository_cleanup_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RepositoryCleanupWorker
+class RepositoryCleanupWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   sidekiq_options retry: 3
diff --git a/app/workers/repository_fork_worker.rb b/app/workers/repository_fork_worker.rb
index ba141f808a7..4b90239dcb8 100644
--- a/app/workers/repository_fork_worker.rb
+++ b/app/workers/repository_fork_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RepositoryForkWorker
+class RepositoryForkWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include Gitlab::ShellAdapter
   include ProjectStartImport
diff --git a/app/workers/repository_import_worker.rb b/app/workers/repository_import_worker.rb
index 15677fb0a95..9f17ef467e3 100644
--- a/app/workers/repository_import_worker.rb
+++ b/app/workers/repository_import_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RepositoryImportWorker
+class RepositoryImportWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExceptionBacktrace
   include ProjectStartImport
diff --git a/app/workers/repository_remove_remote_worker.rb b/app/workers/repository_remove_remote_worker.rb
index 3e55ebc77ed..23a9ec1e202 100644
--- a/app/workers/repository_remove_remote_worker.rb
+++ b/app/workers/repository_remove_remote_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RepositoryRemoveRemoteWorker
+class RepositoryRemoveRemoteWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExclusiveLeaseGuard
 
diff --git a/app/workers/repository_update_remote_mirror_worker.rb b/app/workers/repository_update_remote_mirror_worker.rb
index d1dec4cb732..cfff2382f04 100644
--- a/app/workers/repository_update_remote_mirror_worker.rb
+++ b/app/workers/repository_update_remote_mirror_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RepositoryUpdateRemoteMirrorWorker
+class RepositoryUpdateRemoteMirrorWorker # rubocop:disable Scalability/IdempotentWorker
   UpdateError = Class.new(StandardError)
 
   include ApplicationWorker
diff --git a/app/workers/requests_profiles_worker.rb b/app/workers/requests_profiles_worker.rb
index b711cb99082..106f04d9409 100644
--- a/app/workers/requests_profiles_worker.rb
+++ b/app/workers/requests_profiles_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RequestsProfilesWorker
+class RequestsProfilesWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   # rubocop:disable Scalability/CronWorkerContext
   # This worker does not perform work scoped to a context
diff --git a/app/workers/run_pipeline_schedule_worker.rb b/app/workers/run_pipeline_schedule_worker.rb
index f8f8a2fe7ae..7d76cbed77f 100644
--- a/app/workers/run_pipeline_schedule_worker.rb
+++ b/app/workers/run_pipeline_schedule_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RunPipelineScheduleWorker
+class RunPipelineScheduleWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/schedule_migrate_external_diffs_worker.rb b/app/workers/schedule_migrate_external_diffs_worker.rb
index 0e3c62cf282..4e7b60c4ab7 100644
--- a/app/workers/schedule_migrate_external_diffs_worker.rb
+++ b/app/workers/schedule_migrate_external_diffs_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ScheduleMigrateExternalDiffsWorker
+class ScheduleMigrateExternalDiffsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   # rubocop:disable Scalability/CronWorkerContext:
   # This schedules the `MigrateExternalDiffsWorker`
diff --git a/app/workers/self_monitoring_project_create_worker.rb b/app/workers/self_monitoring_project_create_worker.rb
index 429ac8aacc4..8177efb1683 100644
--- a/app/workers/self_monitoring_project_create_worker.rb
+++ b/app/workers/self_monitoring_project_create_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class SelfMonitoringProjectCreateWorker
+class SelfMonitoringProjectCreateWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExclusiveLeaseGuard
   include SelfMonitoringProjectWorker
diff --git a/app/workers/self_monitoring_project_delete_worker.rb b/app/workers/self_monitoring_project_delete_worker.rb
index 07a7d3f6c45..4fa05d71de5 100644
--- a/app/workers/self_monitoring_project_delete_worker.rb
+++ b/app/workers/self_monitoring_project_delete_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class SelfMonitoringProjectDeleteWorker
+class SelfMonitoringProjectDeleteWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ExclusiveLeaseGuard
   include SelfMonitoringProjectWorker
diff --git a/app/workers/stage_update_worker.rb b/app/workers/stage_update_worker.rb
index a96c4c6dda2..a5097d61927 100644
--- a/app/workers/stage_update_worker.rb
+++ b/app/workers/stage_update_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class StageUpdateWorker
+class StageUpdateWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/stuck_ci_jobs_worker.rb b/app/workers/stuck_ci_jobs_worker.rb
index 6e4ffa36854..b3b1ed66efc 100644
--- a/app/workers/stuck_ci_jobs_worker.rb
+++ b/app/workers/stuck_ci_jobs_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class StuckCiJobsWorker
+class StuckCiJobsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include CronjobQueue
 
diff --git a/app/workers/stuck_import_jobs_worker.rb b/app/workers/stuck_import_jobs_worker.rb
index c9675417aa4..6a48b78b22c 100644
--- a/app/workers/stuck_import_jobs_worker.rb
+++ b/app/workers/stuck_import_jobs_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class StuckImportJobsWorker
+class StuckImportJobsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   # rubocop:disable Scalability/CronWorkerContext
   # This worker updates several import states inline and does not schedule
diff --git a/app/workers/stuck_merge_jobs_worker.rb b/app/workers/stuck_merge_jobs_worker.rb
index 9214ae038a8..e0209b8237a 100644
--- a/app/workers/stuck_merge_jobs_worker.rb
+++ b/app/workers/stuck_merge_jobs_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class StuckMergeJobsWorker
+class StuckMergeJobsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include CronjobQueue # rubocop:disable Scalability/CronWorkerContext
 
diff --git a/app/workers/system_hook_push_worker.rb b/app/workers/system_hook_push_worker.rb
index fc6237f359a..ff1f2baf058 100644
--- a/app/workers/system_hook_push_worker.rb
+++ b/app/workers/system_hook_push_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class SystemHookPushWorker
+class SystemHookPushWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/todos_destroyer/confidential_issue_worker.rb b/app/workers/todos_destroyer/confidential_issue_worker.rb
index 240a5f98ad5..b29d4168162 100644
--- a/app/workers/todos_destroyer/confidential_issue_worker.rb
+++ b/app/workers/todos_destroyer/confidential_issue_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module TodosDestroyer
-  class ConfidentialIssueWorker
+  class ConfidentialIssueWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include TodosDestroyerQueue
 
diff --git a/app/workers/todos_destroyer/entity_leave_worker.rb b/app/workers/todos_destroyer/entity_leave_worker.rb
index 7db3f6c84b4..558cc32d158 100644
--- a/app/workers/todos_destroyer/entity_leave_worker.rb
+++ b/app/workers/todos_destroyer/entity_leave_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module TodosDestroyer
-  class EntityLeaveWorker
+  class EntityLeaveWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include TodosDestroyerQueue
 
diff --git a/app/workers/todos_destroyer/group_private_worker.rb b/app/workers/todos_destroyer/group_private_worker.rb
index 21ec4abe478..a1943bee2ec 100644
--- a/app/workers/todos_destroyer/group_private_worker.rb
+++ b/app/workers/todos_destroyer/group_private_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module TodosDestroyer
-  class GroupPrivateWorker
+  class GroupPrivateWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include TodosDestroyerQueue
 
diff --git a/app/workers/todos_destroyer/private_features_worker.rb b/app/workers/todos_destroyer/private_features_worker.rb
index 1e68f0fd5ae..6e55467234a 100644
--- a/app/workers/todos_destroyer/private_features_worker.rb
+++ b/app/workers/todos_destroyer/private_features_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module TodosDestroyer
-  class PrivateFeaturesWorker
+  class PrivateFeaturesWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include TodosDestroyerQueue
 
diff --git a/app/workers/todos_destroyer/project_private_worker.rb b/app/workers/todos_destroyer/project_private_worker.rb
index 064e001530c..2a06edc666e 100644
--- a/app/workers/todos_destroyer/project_private_worker.rb
+++ b/app/workers/todos_destroyer/project_private_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module TodosDestroyer
-  class ProjectPrivateWorker
+  class ProjectPrivateWorker # rubocop:disable Scalability/IdempotentWorker
     include ApplicationWorker
     include TodosDestroyerQueue
 
diff --git a/app/workers/trending_projects_worker.rb b/app/workers/trending_projects_worker.rb
index 208d8b3b9b5..ee7724e0fa8 100644
--- a/app/workers/trending_projects_worker.rb
+++ b/app/workers/trending_projects_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class TrendingProjectsWorker
+class TrendingProjectsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   # rubocop:disable Scalability/CronWorkerContext
   # This worker does not perform work scoped to a context
diff --git a/app/workers/update_external_pull_requests_worker.rb b/app/workers/update_external_pull_requests_worker.rb
index e363b33f1b9..b459d26e487 100644
--- a/app/workers/update_external_pull_requests_worker.rb
+++ b/app/workers/update_external_pull_requests_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UpdateExternalPullRequestsWorker
+class UpdateExternalPullRequestsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/update_head_pipeline_for_merge_request_worker.rb b/app/workers/update_head_pipeline_for_merge_request_worker.rb
index e069b16eb90..47f0d1e0545 100644
--- a/app/workers/update_head_pipeline_for_merge_request_worker.rb
+++ b/app/workers/update_head_pipeline_for_merge_request_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UpdateHeadPipelineForMergeRequestWorker
+class UpdateHeadPipelineForMergeRequestWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include PipelineQueue
 
diff --git a/app/workers/update_merge_requests_worker.rb b/app/workers/update_merge_requests_worker.rb
index ec9739e8a11..195b455f0aa 100644
--- a/app/workers/update_merge_requests_worker.rb
+++ b/app/workers/update_merge_requests_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UpdateMergeRequestsWorker
+class UpdateMergeRequestsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/update_project_statistics_worker.rb b/app/workers/update_project_statistics_worker.rb
index e36cebf6f4f..336877d9f57 100644
--- a/app/workers/update_project_statistics_worker.rb
+++ b/app/workers/update_project_statistics_worker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Worker for updating project statistics.
-class UpdateProjectStatisticsWorker
+class UpdateProjectStatisticsWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :source_code_management
diff --git a/app/workers/upload_checksum_worker.rb b/app/workers/upload_checksum_worker.rb
index d35367145b8..dc2511f718c 100644
--- a/app/workers/upload_checksum_worker.rb
+++ b/app/workers/upload_checksum_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UploadChecksumWorker
+class UploadChecksumWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :geo_replication
diff --git a/app/workers/wait_for_cluster_creation_worker.rb b/app/workers/wait_for_cluster_creation_worker.rb
index 621125c8503..2e3feb1a4d1 100644
--- a/app/workers/wait_for_cluster_creation_worker.rb
+++ b/app/workers/wait_for_cluster_creation_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class WaitForClusterCreationWorker
+class WaitForClusterCreationWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
   include ClusterQueue
 
diff --git a/app/workers/web_hook_worker.rb b/app/workers/web_hook_worker.rb
index c3fa3162c14..6e1e7e7d62e 100644
--- a/app/workers/web_hook_worker.rb
+++ b/app/workers/web_hook_worker.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class WebHookWorker
+class WebHookWorker # rubocop:disable Scalability/IdempotentWorker
   include ApplicationWorker
 
   feature_category :integrations
diff --git a/changelogs/unreleased/38096-splitmr-write-resource-milestone-events-pd.yml b/changelogs/unreleased/38096-splitmr-write-resource-milestone-events-pd.yml
new file mode 100644
index 00000000000..def579b44e8
--- /dev/null
+++ b/changelogs/unreleased/38096-splitmr-write-resource-milestone-events-pd.yml
@@ -0,0 +1,5 @@
+---
+title: Add possibility to track milestone changes on issues and merge requests
+merge_request: 24780
+author:
+type: added
diff --git a/changelogs/unreleased/ak-rescue-error.yml b/changelogs/unreleased/ak-rescue-error.yml
new file mode 100644
index 00000000000..2815477d758
--- /dev/null
+++ b/changelogs/unreleased/ak-rescue-error.yml
@@ -0,0 +1,5 @@
+---
+title: Rescue elasticsearch server error in pod logs
+merge_request: 25367
+author:
+type: fixed
diff --git a/changelogs/unreleased/migrate-fa-spinner-in-views-dashboard-todos.yml b/changelogs/unreleased/migrate-fa-spinner-in-views-dashboard-todos.yml
new file mode 100644
index 00000000000..7007400ede6
--- /dev/null
+++ b/changelogs/unreleased/migrate-fa-spinner-in-views-dashboard-todos.yml
@@ -0,0 +1,5 @@
+---
+title: Use new loading spinner in Todos dashboard buttons
+merge_request: 25142
+author: Tsegaselassie Tadesse
+type: other
diff --git a/doc/development/background_migrations.md b/doc/development/background_migrations.md
index dfe2312c2fa..9dbfde98766 100644
--- a/doc/development/background_migrations.md
+++ b/doc/development/background_migrations.md
@@ -72,20 +72,21 @@ migration classes must be defined in the namespace
 
 ## Scheduling
 
-Scheduling a background migration should be done in a post-deployment migration.
+Scheduling a background migration should be done in a post-deployment
+migration that includes `Gitlab::Database::MigrationHelpers`
 To do so, simply use the following code while
 replacing the class name and arguments with whatever values are necessary for
 your migration:
 
 ```ruby
-BackgroundMigrationWorker.perform_async('BackgroundMigrationClassName', [arg1, arg2, ...])
+migrate_async('BackgroundMigrationClassName', [arg1, arg2, ...])
 ```
 
 Usually it's better to enqueue jobs in bulk, for this you can use
-`BackgroundMigrationWorker.bulk_perform_async`:
+`bulk_migrate_async`:
 
 ```ruby
-BackgroundMigrationWorker.bulk_perform_async(
+bulk_migrate_async(
   [['BackgroundMigrationClassName', [1]],
    ['BackgroundMigrationClassName', [2]]]
 )
@@ -105,7 +106,7 @@ If you would like to schedule jobs in bulk with a delay, you can use
 jobs = [['BackgroundMigrationClassName', [1]],
         ['BackgroundMigrationClassName', [2]]]
 
-BackgroundMigrationWorker.bulk_perform_in(5.minutes, jobs)
+bulk_migrate_in(5.minutes, jobs)
 ```
 
 ### Rescheduling background migrations
diff --git a/lib/gitlab/database/migration_helpers.rb b/lib/gitlab/database/migration_helpers.rb
index 3b6684b861c..6317e034cfb 100644
--- a/lib/gitlab/database/migration_helpers.rb
+++ b/lib/gitlab/database/migration_helpers.rb
@@ -688,7 +688,7 @@ module Gitlab
           start_id, end_id = batch.pluck('MIN(id), MAX(id)').first
           max_index = index
 
-          BackgroundMigrationWorker.perform_in(
+          migrate_in(
             index * interval,
             'CopyColumn',
             [table, column, temp_column, start_id, end_id]
@@ -697,7 +697,7 @@ module Gitlab
 
         # Schedule the renaming of the column to happen (initially) 1 hour after
         # the last batch finished.
-        BackgroundMigrationWorker.perform_in(
+        migrate_in(
           (max_index * interval) + 1.hour,
           'CleanupConcurrentTypeChange',
           [table, column, temp_column]
@@ -779,7 +779,7 @@ module Gitlab
           start_id, end_id = batch.pluck('MIN(id), MAX(id)').first
           max_index = index
 
-          BackgroundMigrationWorker.perform_in(
+          migrate_in(
             index * interval,
             'CopyColumn',
             [table, old_column, new_column, start_id, end_id]
@@ -788,7 +788,7 @@ module Gitlab
 
         # Schedule the renaming of the column to happen (initially) 1 hour after
         # the last batch finished.
-        BackgroundMigrationWorker.perform_in(
+        migrate_in(
           (max_index * interval) + 1.hour,
           'CleanupConcurrentRename',
           [table, old_column, new_column]
@@ -1024,14 +1024,14 @@ into similar problems in the future (e.g. when new tables are created).
             # We push multiple jobs at a time to reduce the time spent in
             # Sidekiq/Redis operations. We're using this buffer based approach so we
             # don't need to run additional queries for every range.
-            BackgroundMigrationWorker.bulk_perform_async(jobs)
+            bulk_migrate_async(jobs)
             jobs.clear
           end
 
           jobs << [job_class_name, [start_id, end_id]]
         end
 
-        BackgroundMigrationWorker.bulk_perform_async(jobs) unless jobs.empty?
+        bulk_migrate_async(jobs) unless jobs.empty?
       end
 
       # Queues background migration jobs for an entire table, batched by ID range.
@@ -1074,7 +1074,7 @@ into similar problems in the future (e.g. when new tables are created).
           # `BackgroundMigrationWorker.bulk_perform_in` schedules all jobs for
           # the same time, which is not helpful in most cases where we wish to
           # spread the work over time.
-          BackgroundMigrationWorker.perform_in(delay_interval * index, job_class_name, [start_id, end_id])
+          migrate_in(delay_interval * index, job_class_name, [start_id, end_id])
         end
       end
 
@@ -1133,6 +1133,30 @@ into similar problems in the future (e.g. when new tables are created).
         execute(sql)
       end
 
+      def migrate_async(*args)
+        with_migration_context do
+          BackgroundMigrationWorker.perform_async(*args)
+        end
+      end
+
+      def migrate_in(*args)
+        with_migration_context do
+          BackgroundMigrationWorker.perform_in(*args)
+        end
+      end
+
+      def bulk_migrate_in(*args)
+        with_migration_context do
+          BackgroundMigrationWorker.bulk_perform_in(*args)
+        end
+      end
+
+      def bulk_migrate_async(*args)
+        with_migration_context do
+          BackgroundMigrationWorker.bulk_perform_async(*args)
+        end
+      end
+
       private
 
       def tables_match?(target_table, foreign_key_table)
@@ -1191,6 +1215,10 @@ into similar problems in the future (e.g. when new tables are created).
           your migration class
         ERROR
       end
+
+      def with_migration_context(&block)
+        Gitlab::ApplicationContext.with_context(caller_id: self.class.to_s, &block)
+      end
     end
   end
 end
diff --git a/lib/gitlab/sidekiq_config/dummy_worker.rb b/lib/gitlab/sidekiq_config/dummy_worker.rb
index 858ff0db0c9..c2c8354b662 100644
--- a/lib/gitlab/sidekiq_config/dummy_worker.rb
+++ b/lib/gitlab/sidekiq_config/dummy_worker.rb
@@ -11,6 +11,7 @@ module Gitlab
         has_external_dependencies: :worker_has_external_dependencies?,
         latency_sensitive: :latency_sensitive_worker?,
         resource_boundary: :get_worker_resource_boundary,
+        idempotent: :idempotent?,
         weight: :get_weight
       }.freeze
 
diff --git a/lib/gitlab/sidekiq_config/worker.rb b/lib/gitlab/sidekiq_config/worker.rb
index 6cbe327e6b2..4046ef54383 100644
--- a/lib/gitlab/sidekiq_config/worker.rb
+++ b/lib/gitlab/sidekiq_config/worker.rb
@@ -7,7 +7,7 @@ module Gitlab
 
       attr_reader :klass
       delegate :feature_category_not_owned?, :get_feature_category,
-               :get_weight, :get_worker_resource_boundary,
+               :get_weight, :get_worker_resource_boundary, :idempotent?,
                :latency_sensitive_worker?, :queue, :queue_namespace,
                :worker_has_external_dependencies?,
                to: :klass
@@ -51,7 +51,8 @@ module Gitlab
           has_external_dependencies: worker_has_external_dependencies?,
           latency_sensitive: latency_sensitive_worker?,
           resource_boundary: get_worker_resource_boundary,
-          weight: get_weight
+          weight: get_weight,
+          idempotent: idempotent?
         }
       end
 
diff --git a/locale/gitlab.pot b/locale/gitlab.pot
index e0209671160..e8418b34f2d 100644
--- a/locale/gitlab.pot
+++ b/locale/gitlab.pot
@@ -7044,6 +7044,9 @@ msgstr ""
 msgid "Elasticsearch integration. Elasticsearch AWS IAM."
 msgstr ""
 
+msgid "Elasticsearch returned status code: %{status_code}"
+msgstr ""
+
 msgid "Elastic|None. Select namespaces to index."
 msgstr ""
 
diff --git a/rubocop/cop/migration/schedule_async.rb b/rubocop/cop/migration/schedule_async.rb
new file mode 100644
index 00000000000..f296628c3d6
--- /dev/null
+++ b/rubocop/cop/migration/schedule_async.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+require_relative '../../migration_helpers'
+
+module RuboCop
+  module Cop
+    module Migration
+      class ScheduleAsync < RuboCop::Cop::Cop
+        include MigrationHelpers
+
+        ENFORCED_SINCE = 2020_02_12_00_00_00
+
+        MSG = <<~MSG
+          Don't call the background migration worker directly, use the `#migrate_async`,
+          `#migrate_in`, `#bulk_migrate_async` or `#bulk_migrate_in` migration helpers
+          instead.
+        MSG
+
+        def_node_matcher :calls_background_migration_worker?, <<~PATTERN
+          (send (const nil? :BackgroundMigrationWorker) {:perform_async :perform_in :bulk_perform_async :bulk_perform_in} ... )
+        PATTERN
+
+        def on_send(node)
+          return unless in_migration?(node)
+          return if version(node) < ENFORCED_SINCE
+
+          add_offense(node, location: :expression) if calls_background_migration_worker?(node)
+        end
+
+        def autocorrect(node)
+          # This gets rid of the receiver `BackgroundMigrationWorker` and
+          # replaces `perform` with `schedule`
+          schedule_method = method_name(node).to_s.sub('perform', 'migrate')
+          arguments = arguments(node).map(&:source).join(', ')
+
+          replacement = "#{schedule_method}(#{arguments})"
+          lambda do |corrector|
+            corrector.replace(node.source_range, replacement)
+          end
+        end
+
+        private
+
+        def method_name(node)
+          node.children.second
+        end
+
+        def arguments(node)
+          node.children[2..-1]
+        end
+      end
+    end
+  end
+end
diff --git a/rubocop/cop/scalability/idempotent_worker.rb b/rubocop/cop/scalability/idempotent_worker.rb
new file mode 100644
index 00000000000..a38b457b7c7
--- /dev/null
+++ b/rubocop/cop/scalability/idempotent_worker.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+require_relative '../../code_reuse_helpers.rb'
+
+module RuboCop
+  module Cop
+    module Scalability
+      # This cop checks for the `idempotent!` call in the worker scope.
+      #
+      # @example
+      #
+      # # bad
+      # class TroubleMakerWorker
+      #   def perform
+      #   end
+      # end
+      #
+      # # good
+      # class NiceWorker
+      #   idempotent!
+      #
+      #   def perform
+      #   end
+      # end
+      #
+      class IdempotentWorker < RuboCop::Cop::Cop
+        include CodeReuseHelpers
+
+        HELP_LINK = 'https://github.com/mperham/sidekiq/wiki/Best-Practices#2-make-your-job-idempotent-and-transactional'
+
+        MSG = <<~MSG
+          Avoid adding not idempotent workers.
+
+          A worker is considered idempotent if:
+
+          1. It can safely run multiple times with the same arguments
+          2. The application side-effects are expected to happen once (or side-effects of a second run are not impactful)
+          3. It can safely be skipped if another job with the same arguments is already in the queue
+
+          If all the above is true, make sure to mark it as so by calling the `idempotent!`
+          method in the worker scope.
+
+          See #{HELP_LINK}
+        MSG
+
+        def_node_search :idempotent?, <<~PATTERN
+          (send nil? :idempotent!)
+        PATTERN
+
+        def on_class(node)
+          return unless in_worker?(node)
+          return if idempotent?(node)
+
+          add_offense(node, location: :expression)
+        end
+      end
+    end
+  end
+end
diff --git a/rubocop/migration_helpers.rb b/rubocop/migration_helpers.rb
index 577f768da67..767cacaecaf 100644
--- a/rubocop/migration_helpers.rb
+++ b/rubocop/migration_helpers.rb
@@ -10,6 +10,10 @@ module RuboCop
       dirname(node).end_with?('db/post_migrate', 'db/geo/post_migrate')
     end
 
+    def version(node)
+      File.basename(node.location.expression.source_buffer.name).split('_').first.to_i
+    end
+
     private
 
     def dirname(node)
diff --git a/spec/controllers/projects/milestones_controller_spec.rb b/spec/controllers/projects/milestones_controller_spec.rb
index 6b698c6da66..ee61ef73b45 100644
--- a/spec/controllers/projects/milestones_controller_spec.rb
+++ b/spec/controllers/projects/milestones_controller_spec.rb
@@ -135,6 +135,10 @@ describe Projects::MilestonesController do
   end
 
   describe "#destroy" do
+    before do
+      stub_feature_flags(track_resource_milestone_change_events: false)
+    end
+
     it "removes milestone" do
       expect(issue.milestone_id).to eq(milestone.id)
 
diff --git a/spec/factories/resource_milestone_event.rb b/spec/factories/resource_milestone_event.rb
new file mode 100644
index 00000000000..86c54f2be68
--- /dev/null
+++ b/spec/factories/resource_milestone_event.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :resource_milestone_event do
+    issue { merge_request.nil? ? create(:issue) : nil }
+    merge_request { nil }
+    milestone
+    action { :add }
+    state { :opened }
+    user { issue&.author || merge_request&.author || create(:user) }
+  end
+end
diff --git a/spec/lib/gitlab/database/migration_helpers_spec.rb b/spec/lib/gitlab/database/migration_helpers_spec.rb
index 4cf2553b90d..bb5475130cf 100644
--- a/spec/lib/gitlab/database/migration_helpers_spec.rb
+++ b/spec/lib/gitlab/database/migration_helpers_spec.rb
@@ -1893,4 +1893,60 @@ describe Gitlab::Database::MigrationHelpers do
       end
     end
   end
+
+  describe '#migrate_async' do
+    it 'calls BackgroundMigrationWorker.perform_async' do
+      expect(BackgroundMigrationWorker).to receive(:perform_async).with("Class", "hello", "world")
+
+      model.migrate_async("Class", "hello", "world")
+    end
+
+    it 'pushes a context with the current class name as caller_id' do
+      expect(Gitlab::ApplicationContext).to receive(:with_context).with(caller_id: model.class.to_s)
+
+      model.migrate_async('Class', 'hello', 'world')
+    end
+  end
+
+  describe '#migrate_in' do
+    it 'calls BackgroundMigrationWorker.perform_in' do
+      expect(BackgroundMigrationWorker).to receive(:perform_in).with(10.minutes, 'Class', 'Hello', 'World')
+
+      model.migrate_in(10.minutes, 'Class', 'Hello', 'World')
+    end
+
+    it 'pushes a context with the current class name as caller_id' do
+      expect(Gitlab::ApplicationContext).to receive(:with_context).with(caller_id: model.class.to_s)
+
+      model.migrate_in(10.minutes, 'Class', 'Hello', 'World')
+    end
+  end
+
+  describe '#bulk_migrate_async' do
+    it 'calls BackgroundMigrationWorker.bulk_perform_async' do
+      expect(BackgroundMigrationWorker).to receive(:bulk_perform_async).with([%w(Class hello world)])
+
+      model.bulk_migrate_async([%w(Class hello world)])
+    end
+
+    it 'pushes a context with the current class name as caller_id' do
+      expect(Gitlab::ApplicationContext).to receive(:with_context).with(caller_id: model.class.to_s)
+
+      model.bulk_migrate_async([%w(Class hello world)])
+    end
+  end
+
+  describe '#bulk_migrate_in' do
+    it 'calls BackgroundMigrationWorker.bulk_perform_in_' do
+      expect(BackgroundMigrationWorker).to receive(:bulk_perform_in).with(10.minutes, [%w(Class hello world)])
+
+      model.bulk_migrate_in(10.minutes, [%w(Class hello world)])
+    end
+
+    it 'pushes a context with the current class name as caller_id' do
+      expect(Gitlab::ApplicationContext).to receive(:with_context).with(caller_id: model.class.to_s)
+
+      model.bulk_migrate_in(10.minutes, [%w(Class hello world)])
+    end
+  end
 end
diff --git a/spec/lib/gitlab/import_export/all_models.yml b/spec/lib/gitlab/import_export/all_models.yml
index 4dadb310029..6c9a4bbfc71 100644
--- a/spec/lib/gitlab/import_export/all_models.yml
+++ b/spec/lib/gitlab/import_export/all_models.yml
@@ -9,6 +9,7 @@ issues:
 - notes
 - resource_label_events
 - resource_weight_events
+- resource_milestone_events
 - sentry_issue
 - label_links
 - labels
@@ -109,6 +110,7 @@ merge_requests:
 - milestone
 - notes
 - resource_label_events
+- resource_milestone_events
 - label_links
 - labels
 - last_edited_by
diff --git a/spec/lib/gitlab/sidekiq_config/worker_spec.rb b/spec/lib/gitlab/sidekiq_config/worker_spec.rb
index 38edd0f5eeb..fcdce8f9432 100644
--- a/spec/lib/gitlab/sidekiq_config/worker_spec.rb
+++ b/spec/lib/gitlab/sidekiq_config/worker_spec.rb
@@ -12,7 +12,8 @@ describe Gitlab::SidekiqConfig::Worker do
       get_weight: attributes[:weight],
       get_worker_resource_boundary: attributes[:resource_boundary],
       latency_sensitive_worker?: attributes[:latency_sensitive],
-      worker_has_external_dependencies?: attributes[:has_external_dependencies]
+      worker_has_external_dependencies?: attributes[:has_external_dependencies],
+      idempotent?: attributes[:idempotent]
     )
 
     described_class.new(inner_worker, ee: false)
@@ -89,7 +90,8 @@ describe Gitlab::SidekiqConfig::Worker do
         has_external_dependencies: false,
         latency_sensitive: false,
         resource_boundary: :memory,
-        weight: 2
+        weight: 2,
+        idempotent: true
       }
 
       attributes_b = {
@@ -97,7 +99,8 @@ describe Gitlab::SidekiqConfig::Worker do
         has_external_dependencies: true,
         latency_sensitive: true,
         resource_boundary: :unknown,
-        weight: 1
+        weight: 3,
+        idempotent: false
       }
 
       worker_a = create_worker(queue: 'a', **attributes_a)
diff --git a/spec/models/milestone_note_spec.rb b/spec/models/milestone_note_spec.rb
new file mode 100644
index 00000000000..9e77ef91bb2
--- /dev/null
+++ b/spec/models/milestone_note_spec.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe MilestoneNote do
+  describe '.from_event' do
+    let(:author) { create(:user) }
+    let(:project) { create(:project, :repository) }
+    let(:noteable) { create(:issue, author: author, project: project) }
+    let(:event) { create(:resource_milestone_event, issue: noteable) }
+
+    subject { described_class.from_event(event, resource: noteable, resource_parent: project) }
+
+    it_behaves_like 'a system note', exclude_project: true do
+      let(:action) { 'milestone' }
+    end
+  end
+end
diff --git a/spec/models/resource_milestone_event_spec.rb b/spec/models/resource_milestone_event_spec.rb
new file mode 100644
index 00000000000..1b0181e3fd2
--- /dev/null
+++ b/spec/models/resource_milestone_event_spec.rb
@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ResourceMilestoneEvent, type: :model do
+  it_behaves_like 'a resource event'
+  it_behaves_like 'a resource event for issues'
+  it_behaves_like 'a resource event for merge requests'
+
+  it_behaves_like 'having unique enum values'
+
+  describe 'associations' do
+    it { is_expected.to belong_to(:milestone) }
+  end
+
+  describe 'validations' do
+    context 'when issue and merge_request are both nil' do
+      subject { build(described_class.name.underscore.to_sym, issue: nil, merge_request: nil) }
+
+      it { is_expected.not_to be_valid }
+    end
+
+    context 'when issue and merge_request are both set' do
+      subject { build(described_class.name.underscore.to_sym, issue: build(:issue), merge_request: build(:merge_request)) }
+
+      it { is_expected.not_to be_valid }
+    end
+
+    context 'when issue is set' do
+      subject { create(described_class.name.underscore.to_sym, issue: create(:issue), merge_request: nil) }
+
+      it { is_expected.to be_valid }
+    end
+
+    context 'when merge_request is set' do
+      subject { create(described_class.name.underscore.to_sym, issue: nil, merge_request: create(:merge_request)) }
+
+      it { is_expected.to be_valid }
+    end
+  end
+
+  describe 'states' do
+    [Issue, MergeRequest].each do |klass|
+      klass.available_states.each do |state|
+        it "supports state #{state.first} for #{klass.name.underscore}" do
+          model = create(klass.name.underscore, state: state[0])
+          key = model.class.name.underscore
+          event = build(described_class.name.underscore.to_sym, key => model, state: model.state)
+
+          expect(event.state).to eq(state[0])
+        end
+      end
+    end
+  end
+end
diff --git a/spec/rubocop/cop/migration/schedule_async_spec.rb b/spec/rubocop/cop/migration/schedule_async_spec.rb
new file mode 100644
index 00000000000..3453f1c51cc
--- /dev/null
+++ b/spec/rubocop/cop/migration/schedule_async_spec.rb
@@ -0,0 +1,152 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+
+require 'rubocop'
+require 'rubocop/rspec/support'
+
+require_relative '../../../../rubocop/cop/migration/schedule_async'
+
+describe RuboCop::Cop::Migration::ScheduleAsync do
+  include CopHelper
+
+  let(:cop) { described_class.new }
+  let(:source) do
+    <<~SOURCE
+      def up
+        BackgroundMigrationWorker.perform_async(ClazzName, "Bar", "Baz")
+      end
+    SOURCE
+  end
+
+  shared_examples 'a disabled cop' do
+    it 'does not register any offenses' do
+      inspect_source(source)
+
+      expect(cop.offenses).to be_empty
+    end
+  end
+
+  context 'outside of a migration' do
+    it_behaves_like 'a disabled cop'
+  end
+
+  context 'in a migration' do
+    before do
+      allow(cop).to receive(:in_migration?).and_return(true)
+    end
+
+    context 'in an old migration' do
+      before do
+        allow(cop).to receive(:version).and_return(described_class::ENFORCED_SINCE - 5)
+      end
+
+      it_behaves_like 'a disabled cop'
+    end
+
+    context 'that is recent' do
+      before do
+        allow(cop).to receive(:version).and_return(described_class::ENFORCED_SINCE + 5)
+      end
+
+      context 'BackgroundMigrationWorker.perform_async' do
+        it 'adds an offence when calling `BackgroundMigrationWorker.peform_async`' do
+          inspect_source(source)
+
+          expect(cop.offenses.size).to eq(1)
+        end
+
+        it 'autocorrects to the right version' do
+          correct_source = <<~CORRECT
+          def up
+            migrate_async(ClazzName, "Bar", "Baz")
+          end
+          CORRECT
+
+          expect(autocorrect_source(source)).to eq(correct_source)
+        end
+      end
+
+      context 'BackgroundMigrationWorker.perform_in' do
+        let(:source) do
+          <<~SOURCE
+            def up
+              BackgroundMigrationWorker
+                .perform_in(delay, ClazzName, "Bar", "Baz")
+            end
+          SOURCE
+        end
+
+        it 'adds an offence' do
+          inspect_source(source)
+
+          expect(cop.offenses.size).to eq(1)
+        end
+
+        it 'autocorrects to the right version' do
+          correct_source = <<~CORRECT
+            def up
+              migrate_in(delay, ClazzName, "Bar", "Baz")
+            end
+          CORRECT
+
+          expect(autocorrect_source(source)).to eq(correct_source)
+        end
+      end
+
+      context 'BackgroundMigrationWorker.bulk_perform_async' do
+        let(:source) do
+          <<~SOURCE
+            def up
+              BackgroundMigrationWorker
+                .bulk_perform_async(jobs)
+            end
+          SOURCE
+        end
+
+        it 'adds an offence' do
+          inspect_source(source)
+
+          expect(cop.offenses.size).to eq(1)
+        end
+
+        it 'autocorrects to the right version' do
+          correct_source = <<~CORRECT
+            def up
+              bulk_migrate_async(jobs)
+            end
+          CORRECT
+
+          expect(autocorrect_source(source)).to eq(correct_source)
+        end
+      end
+
+      context 'BackgroundMigrationWorker.bulk_perform_in' do
+        let(:source) do
+          <<~SOURCE
+            def up
+              BackgroundMigrationWorker
+                .bulk_perform_in(5.minutes, jobs)
+            end
+          SOURCE
+        end
+
+        it 'adds an offence' do
+          inspect_source(source)
+
+          expect(cop.offenses.size).to eq(1)
+        end
+
+        it 'autocorrects to the right version' do
+          correct_source = <<~CORRECT
+            def up
+              bulk_migrate_in(5.minutes, jobs)
+            end
+          CORRECT
+
+          expect(autocorrect_source(source)).to eq(correct_source)
+        end
+      end
+    end
+  end
+end
diff --git a/spec/rubocop/cop/scalability/idempotent_worker_spec.rb b/spec/rubocop/cop/scalability/idempotent_worker_spec.rb
new file mode 100644
index 00000000000..7abd602f8bc
--- /dev/null
+++ b/spec/rubocop/cop/scalability/idempotent_worker_spec.rb
@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+require 'rubocop'
+require_relative '../../../support/helpers/expect_offense'
+require_relative '../../../../rubocop/cop/scalability/idempotent_worker'
+
+describe RuboCop::Cop::Scalability::IdempotentWorker do
+  include CopHelper
+  include ExpectOffense
+
+  subject(:cop) { described_class.new }
+
+  before do
+    allow(cop)
+      .to receive(:in_worker?)
+      .and_return(true)
+  end
+
+  it 'adds an offense when not defining idempotent method' do
+    inspect_source(<<~CODE.strip_indent)
+      class SomeWorker
+      end
+    CODE
+
+    expect(cop.offenses.size).to eq(1)
+  end
+
+  it 'adds an offense when not defining idempotent method' do
+    inspect_source(<<~CODE.strip_indent)
+      class SomeWorker
+        idempotent!
+      end
+    CODE
+
+    expect(cop.offenses.size).to be_zero
+  end
+end
diff --git a/spec/rubocop/migration_helpers_spec.rb b/spec/rubocop/migration_helpers_spec.rb
new file mode 100644
index 00000000000..73ced8c58da
--- /dev/null
+++ b/spec/rubocop/migration_helpers_spec.rb
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+require 'rubocop'
+require 'rspec-parameterized'
+
+require_relative '../../rubocop/migration_helpers'
+
+describe RuboCop::MigrationHelpers do
+  using RSpec::Parameterized::TableSyntax
+
+  subject(:fake_cop) { Class.new { include RuboCop::MigrationHelpers }.new }
+
+  let(:node) { double(:node) }
+
+  before do
+    allow(node).to receive_message_chain('location.expression.source_buffer.name')
+                     .and_return(name)
+  end
+
+  describe '#in_migration?' do
+    where(:name, :expected) do
+      '/gitlab/db/migrate/20200210184420_create_operations_scopes_table.rb'          | true
+      '/gitlab/db/post_migrate/20200210184420_create_operations_scopes_table.rb'     | true
+      '/gitlab/db/geo/migrate/20200210184420_create_operations_scopes_table.rb'      | true
+      '/gitlab/db/geo/post_migrate/20200210184420_create_operations_scopes_table.rb' | true
+      '/gitlab/db/elsewhere/20200210184420_create_operations_scopes_table.rb'        | false
+    end
+
+    with_them do
+      it { expect(fake_cop.in_migration?(node)).to eq(expected) }
+    end
+  end
+
+  describe '#in_post_deployment_migration?' do
+    where(:name, :expected) do
+      '/gitlab/db/migrate/20200210184420_create_operations_scopes_table.rb'          | false
+      '/gitlab/db/post_migrate/20200210184420_create_operations_scopes_table.rb'     | true
+      '/gitlab/db/geo/migrate/20200210184420_create_operations_scopes_table.rb'      | false
+      '/gitlab/db/geo/post_migrate/20200210184420_create_operations_scopes_table.rb' | true
+      '/gitlab/db/elsewhere/20200210184420_create_operations_scopes_table.rb'        | false
+    end
+
+    with_them do
+      it { expect(fake_cop.in_post_deployment_migration?(node)).to eq(expected) }
+    end
+  end
+
+  describe "#version" do
+    let(:name) do
+      '/path/to/gitlab/db/migrate/20200210184420_create_operations_scopes_table.rb'
+    end
+
+    it { expect(fake_cop.version(node)).to eq(20200210184420) }
+  end
+end
diff --git a/spec/services/issuable/clone/attributes_rewriter_spec.rb b/spec/services/issuable/clone/attributes_rewriter_spec.rb
index 20bda6984bd..6bc0df8260b 100644
--- a/spec/services/issuable/clone/attributes_rewriter_spec.rb
+++ b/spec/services/issuable/clone/attributes_rewriter_spec.rb
@@ -75,5 +75,47 @@ describe Issuable::Clone::AttributesRewriter do
 
       expect(new_issue.reload.milestone).to eq(milestone)
     end
+
+    context 'with existing milestone events' do
+      let!(:milestone1_project1) { create(:milestone, title: 'milestone1', project: project1) }
+      let!(:milestone2_project1) { create(:milestone, title: 'milestone2', project: project1) }
+      let!(:milestone3_project1) { create(:milestone, title: 'milestone3', project: project1) }
+
+      let!(:milestone1_project2) { create(:milestone, title: 'milestone1', project: project2) }
+      let!(:milestone2_project2) { create(:milestone, title: 'milestone2', project: project2) }
+
+      before do
+        original_issue.update(milestone: milestone2_project1)
+
+        create_event(milestone1_project1)
+        create_event(milestone2_project1)
+        create_event(milestone1_project1, 'remove')
+        create_event(milestone3_project1)
+      end
+
+      it 'copies existing resource milestone events' do
+        subject.execute
+
+        new_issue_milestone_events = new_issue.reload.resource_milestone_events
+        expect(new_issue_milestone_events.count).to eq(3)
+
+        expect_milestone_event(new_issue_milestone_events.first, milestone: milestone1_project2, action: 'add', state: 'opened')
+        expect_milestone_event(new_issue_milestone_events.second, milestone: milestone2_project2, action: 'add', state: 'opened')
+        expect_milestone_event(new_issue_milestone_events.third, milestone: milestone1_project2, action: 'remove', state: 'opened')
+      end
+
+      def create_event(milestone, action = 'add')
+        create(:resource_milestone_event, issue: original_issue, milestone: milestone, action: action)
+      end
+
+      def expect_milestone_event(event, expected_attrs)
+        expect(event.milestone_id).to eq(expected_attrs[:milestone].id)
+        expect(event.action).to eq(expected_attrs[:action])
+        expect(event.state).to eq(expected_attrs[:state])
+
+        expect(event.reference).to be_nil
+        expect(event.reference_html).to be_nil
+      end
+    end
   end
 end
diff --git a/spec/services/issuable/common_system_notes_service_spec.rb b/spec/services/issuable/common_system_notes_service_spec.rb
index 7e40ac9ff4d..771e7ca42c9 100644
--- a/spec/services/issuable/common_system_notes_service_spec.rb
+++ b/spec/services/issuable/common_system_notes_service_spec.rb
@@ -3,8 +3,9 @@
 require 'spec_helper'
 
 describe Issuable::CommonSystemNotesService do
-  let(:user) { create(:user) }
-  let(:project) { create(:project) }
+  let_it_be(:project) { create(:project) }
+  let_it_be(:user) { create(:user) }
+
   let(:issuable) { create(:issue, project: project) }
 
   context 'on issuable update' do
@@ -35,6 +36,8 @@ describe Issuable::CommonSystemNotesService do
       before do
         milestone = create(:milestone, project: project)
         issuable.milestone_id = milestone.id
+
+        stub_feature_flags(track_resource_milestone_change_events: false)
       end
 
       it_behaves_like 'system note creation', {}, 'changed milestone'
@@ -97,12 +100,39 @@ describe Issuable::CommonSystemNotesService do
       expect(event.user_id).to eq user.id
     end
 
-    it 'creates a system note for milestone set' do
-      issuable.milestone = create(:milestone, project: project)
-      issuable.save
+    context 'when milestone change event tracking is disabled' do
+      before do
+        stub_feature_flags(track_resource_milestone_change_events: false)
 
-      expect { subject }.to change { issuable.notes.count }.from(0).to(1)
-      expect(issuable.notes.last.note).to match('changed milestone')
+        issuable.milestone = create(:milestone, project: project)
+        issuable.save
+      end
+
+      it 'creates a system note for milestone set' do
+        expect { subject }.to change { issuable.notes.count }.from(0).to(1)
+        expect(issuable.notes.last.note).to match('changed milestone')
+      end
+
+      it 'does not create a milestone change event' do
+        expect { subject }.not_to change { ResourceMilestoneEvent.count }
+      end
+    end
+
+    context 'when milestone change event tracking is enabled' do
+      let_it_be(:milestone) { create(:milestone, project: project) }
+      let_it_be(:issuable) { create(:issue, project: project, milestone: milestone) }
+
+      before do
+        stub_feature_flags(track_resource_milestone_change_events: true)
+      end
+
+      it 'does not create a system note for milestone set' do
+        expect { subject }.not_to change { issuable.notes.count }
+      end
+
+      it 'creates a milestone change event' do
+        expect { subject }.to change { ResourceMilestoneEvent.count }.from(0).to(1)
+      end
     end
 
     it 'creates a system note for due_date set' do
diff --git a/spec/services/issues/update_service_spec.rb b/spec/services/issues/update_service_spec.rb
index 888a63980f6..5da77dd914c 100644
--- a/spec/services/issues/update_service_spec.rb
+++ b/spec/services/issues/update_service_spec.rb
@@ -385,6 +385,10 @@ describe Issues::UpdateService, :mailer do
       end
 
       context 'when the milestone is removed' do
+        before do
+          stub_feature_flags(track_resource_milestone_change_events: false)
+        end
+
         let!(:non_subscriber) { create(:user) }
 
         let!(:subscriber) do
@@ -411,6 +415,10 @@ describe Issues::UpdateService, :mailer do
       end
 
       context 'when the milestone is changed' do
+        before do
+          stub_feature_flags(track_resource_milestone_change_events: false)
+        end
+
         let!(:non_subscriber) { create(:user) }
 
         let!(:subscriber) do
diff --git a/spec/services/merge_requests/update_service_spec.rb b/spec/services/merge_requests/update_service_spec.rb
index f295f3c4a81..dd5d90b2d07 100644
--- a/spec/services/merge_requests/update_service_spec.rb
+++ b/spec/services/merge_requests/update_service_spec.rb
@@ -367,6 +367,10 @@ describe MergeRequests::UpdateService, :mailer do
       end
 
       context 'when the milestone is removed' do
+        before do
+          stub_feature_flags(track_resource_milestone_change_events: false)
+        end
+
         let!(:non_subscriber) { create(:user) }
 
         let!(:subscriber) do
@@ -393,6 +397,10 @@ describe MergeRequests::UpdateService, :mailer do
       end
 
       context 'when the milestone is changed' do
+        before do
+          stub_feature_flags(track_resource_milestone_change_events: false)
+        end
+
         let!(:non_subscriber) { create(:user) }
 
         let!(:subscriber) do
diff --git a/spec/services/resource_events/change_milestone_service_spec.rb b/spec/services/resource_events/change_milestone_service_spec.rb
new file mode 100644
index 00000000000..c6b4f8e1b7e
--- /dev/null
+++ b/spec/services/resource_events/change_milestone_service_spec.rb
@@ -0,0 +1,67 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ResourceEvents::ChangeMilestoneService do
+  shared_examples 'milestone events creator' do
+    let_it_be(:user) { create(:user) }
+
+    let_it_be(:milestone) { create(:milestone) }
+
+    context 'when milestone is present' do
+      before do
+        resource.milestone = milestone
+      end
+
+      let(:service) { described_class.new(resource: resource, user: user, created_at: created_at_time) }
+
+      it 'creates the expected event record' do
+        expect { service.execute }.to change { ResourceMilestoneEvent.count }.from(0).to(1)
+
+        events = ResourceMilestoneEvent.all
+
+        expect(events.size).to eq(1)
+        expect_event_record(events.first, action: 'add', milestone: milestone, state: 'opened')
+      end
+    end
+
+    context 'when milestones is not present' do
+      before do
+        resource.milestone = nil
+      end
+
+      let(:service) { described_class.new(resource: resource, user: user, created_at: created_at_time) }
+
+      it 'creates the expected event records' do
+        expect { service.execute }.to change { ResourceMilestoneEvent.count }.from(0).to(1)
+
+        expect_event_record(ResourceMilestoneEvent.first, action: 'remove', milestone: nil, state: 'opened')
+      end
+    end
+
+    def expect_event_record(event, expected_attrs)
+      expect(event.action).to eq(expected_attrs[:action])
+      expect(event.state).to eq(expected_attrs[:state])
+      expect(event.user).to eq(user)
+      expect(event.issue).to eq(resource) if resource.is_a?(Issue)
+      expect(event.issue).to be_nil unless resource.is_a?(Issue)
+      expect(event.merge_request).to eq(resource) if resource.is_a?(MergeRequest)
+      expect(event.merge_request).to be_nil unless resource.is_a?(MergeRequest)
+      expect(event.milestone).to eq(expected_attrs[:milestone])
+      expect(event.created_at).to eq(created_at_time)
+    end
+  end
+
+  let_it_be(:merge_request) { create(:merge_request) }
+  let_it_be(:issue) { create(:issue) }
+
+  let!(:created_at_time) { Time.utc(2019, 12, 30) }
+
+  it_behaves_like 'milestone events creator' do
+    let(:resource) { issue }
+  end
+
+  it_behaves_like 'milestone events creator' do
+    let(:resource) { merge_request }
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 35bf6846ab3..b862fc4bbd9 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -119,6 +119,7 @@ RSpec.configure do |config|
   config.include PolicyHelpers, type: :policy
   config.include MemoryUsageHelper
   config.include ExpectRequestWithStatus, type: :request
+  config.include IdempotentWorkerHelper, type: :worker
   config.include RailsHelpers
 
   if ENV['CI'] || ENV['RETRIES']
diff --git a/spec/support/helpers/idempotent_worker_helper.rb b/spec/support/helpers/idempotent_worker_helper.rb
new file mode 100644
index 00000000000..b80758d10bd
--- /dev/null
+++ b/spec/support/helpers/idempotent_worker_helper.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+module IdempotentWorkerHelper
+  WORKER_EXEC_TIMES = 2
+
+  def perform_multiple(args = [], worker: described_class.new, exec_times: WORKER_EXEC_TIMES)
+    Sidekiq::Testing.inline! do
+      job_args = args.nil? ? [nil] : Array.wrap(args)
+
+      expect(worker).to receive(:perform).exactly(exec_times).and_call_original
+
+      exec_times.times { worker.perform(*job_args) }
+    end
+  end
+end
diff --git a/spec/support/shared_examples/quick_actions/issue/move_quick_action_shared_examples.rb b/spec/support/shared_examples/quick_actions/issue/move_quick_action_shared_examples.rb
index 897a962fc56..32c46753006 100644
--- a/spec/support/shared_examples/quick_actions/issue/move_quick_action_shared_examples.rb
+++ b/spec/support/shared_examples/quick_actions/issue/move_quick_action_shared_examples.rb
@@ -50,6 +50,8 @@ RSpec.shared_examples 'move quick action' do
       let(:bug)      { create(:label, project: project, title: 'bug') }
       let(:wontfix)  { create(:label, project: project, title: 'wontfix') }
 
+      let!(:target_milestone) { create(:milestone, title: '1.0', project: target_project) }
+
       before do
         target_project.add_maintainer(user)
       end
diff --git a/spec/support/shared_examples/resource_events.rb b/spec/support/shared_examples/resource_events.rb
new file mode 100644
index 00000000000..d7e7349ad6c
--- /dev/null
+++ b/spec/support/shared_examples/resource_events.rb
@@ -0,0 +1,104 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+shared_examples 'a resource event' do
+  let_it_be(:user1) { create(:user) }
+  let_it_be(:user2) { create(:user) }
+
+  let_it_be(:issue1) { create(:issue, author: user1) }
+  let_it_be(:issue2) { create(:issue, author: user1) }
+  let_it_be(:issue3) { create(:issue, author: user2) }
+
+  describe 'validations' do
+    it { is_expected.not_to allow_value(nil).for(:user) }
+  end
+
+  describe 'associations' do
+    it { is_expected.to belong_to(:user) }
+  end
+
+  describe '.created_after' do
+    let!(:created_at1) { 1.day.ago }
+    let!(:created_at2) { 2.days.ago }
+    let!(:created_at3) { 3.days.ago }
+
+    let!(:event1) { create(described_class.name.underscore.to_sym, issue: issue1, created_at: created_at1) }
+    let!(:event2) { create(described_class.name.underscore.to_sym, issue: issue2, created_at: created_at2) }
+    let!(:event3) { create(described_class.name.underscore.to_sym, issue: issue2, created_at: created_at3) }
+
+    it 'returns the expected events' do
+      events = described_class.created_after(created_at3)
+
+      expect(events).to contain_exactly(event1, event2)
+    end
+
+    it 'returns no events if time is after last record time' do
+      events = described_class.created_after(1.minute.ago)
+
+      expect(events).to be_empty
+    end
+  end
+end
+
+shared_examples 'a resource event for issues' do
+  let_it_be(:user1) { create(:user) }
+  let_it_be(:user2) { create(:user) }
+
+  let_it_be(:issue1) { create(:issue, author: user1) }
+  let_it_be(:issue2) { create(:issue, author: user1) }
+  let_it_be(:issue3) { create(:issue, author: user2) }
+
+  describe 'associations' do
+    it { is_expected.to belong_to(:issue) }
+  end
+
+  describe '.by_issue' do
+    let_it_be(:event1) { create(described_class.name.underscore.to_sym, issue: issue1) }
+    let_it_be(:event2) { create(described_class.name.underscore.to_sym, issue: issue2) }
+    let_it_be(:event3) { create(described_class.name.underscore.to_sym, issue: issue1) }
+
+    it 'returns the expected records for an issue with events' do
+      events = described_class.by_issue(issue1)
+
+      expect(events).to contain_exactly(event1, event3)
+    end
+
+    it 'returns the expected records for an issue with no events' do
+      events = described_class.by_issue(issue3)
+
+      expect(events).to be_empty
+    end
+  end
+end
+
+shared_examples 'a resource event for merge requests' do
+  let_it_be(:user1) { create(:user) }
+  let_it_be(:user2) { create(:user) }
+
+  let_it_be(:merge_request1) { create(:merge_request, author: user1) }
+  let_it_be(:merge_request2) { create(:merge_request, author: user1) }
+  let_it_be(:merge_request3) { create(:merge_request, author: user2) }
+
+  describe 'associations' do
+    it { is_expected.to belong_to(:merge_request) }
+  end
+
+  describe '.by_merge_request' do
+    let_it_be(:event1) { create(described_class.name.underscore.to_sym, merge_request: merge_request1) }
+    let_it_be(:event2) { create(described_class.name.underscore.to_sym, merge_request: merge_request2) }
+    let_it_be(:event3) { create(described_class.name.underscore.to_sym, merge_request: merge_request1) }
+
+    it 'returns the expected records for an issue with events' do
+      events = described_class.by_merge_request(merge_request1)
+
+      expect(events).to contain_exactly(event1, event3)
+    end
+
+    it 'returns the expected records for an issue with no events' do
+      events = described_class.by_merge_request(merge_request3)
+
+      expect(events).to be_empty
+    end
+  end
+end
diff --git a/spec/support/shared_examples/workers/idempotency_shared_examples.rb b/spec/support/shared_examples/workers/idempotency_shared_examples.rb
new file mode 100644
index 00000000000..19be1fe2c9d
--- /dev/null
+++ b/spec/support/shared_examples/workers/idempotency_shared_examples.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+# This shared_example requires the following variables:
+# - job_args (if not given, will fallback to call perform without arguments)
+#
+# Usage:
+#
+#   include_examples 'an idempotent worker' do
+#     it 'checks the side-effects for multiple calls' do
+#       # it'll call the job's perform method 3 times
+#       # by default.
+#       subject
+#
+#       expect(model.state).to eq('state')
+#     end
+#   end
+#
+RSpec.shared_examples 'an idempotent worker' do
+  # Avoid stubbing calls for a more accurate run.
+  subject do
+    defined?(job_args) ? perform_multiple(job_args) : perform_multiple
+  end
+
+  it 'is labeled as idempotent' do
+    expect(described_class).to be_idempotent
+  end
+
+  it 'performs multiple times sequentially without raising an exception' do
+    expect { subject }.not_to raise_error
+  end
+end
diff --git a/spec/workers/background_migration_worker_spec.rb b/spec/workers/background_migration_worker_spec.rb
index aae6fa02a0c..2b2ffc9f5b9 100644
--- a/spec/workers/background_migration_worker_spec.rb
+++ b/spec/workers/background_migration_worker_spec.rb
@@ -11,7 +11,7 @@ describe BackgroundMigrationWorker, :clean_gitlab_redis_shared_state do
     end
   end
 
-  describe '.perform' do
+  describe '#perform' do
     it 'performs a background migration' do
       expect(Gitlab::BackgroundMigration)
         .to receive(:perform)
@@ -52,6 +52,14 @@ describe BackgroundMigrationWorker, :clean_gitlab_redis_shared_state do
 
       worker.perform('Foo', [10, 20])
     end
+
+    it 'sets the class that will be executed as the caller_id' do
+      expect(Gitlab::BackgroundMigration).to receive(:perform) do
+        expect(Labkit::Context.current.to_h).to include('meta.caller_id' => 'Foo')
+      end
+
+      worker.perform('Foo', [10, 20])
+    end
   end
 
   describe '#healthy_database?' do
diff --git a/spec/workers/expire_job_cache_worker_spec.rb b/spec/workers/expire_job_cache_worker_spec.rb
index eeab304d926..ebca7020ee5 100644
--- a/spec/workers/expire_job_cache_worker_spec.rb
+++ b/spec/workers/expire_job_cache_worker_spec.rb
@@ -6,20 +6,32 @@ describe ExpireJobCacheWorker do
   set(:pipeline) { create(:ci_empty_pipeline) }
   let(:project) { pipeline.project }
 
-  subject { described_class.new }
-
   describe '#perform' do
     context 'with a job in the pipeline' do
       let(:job) { create(:ci_build, pipeline: pipeline) }
+      let(:job_args) { job.id }
+
+      include_examples 'an idempotent worker' do
+        it 'invalidates Etag caching for the job path' do
+          pipeline_path = "/#{project.full_path}/pipelines/#{pipeline.id}.json"
+          job_path = "/#{project.full_path}/builds/#{job.id}.json"
+
+          spy_store = Gitlab::EtagCaching::Store.new
+
+          allow(Gitlab::EtagCaching::Store).to receive(:new) { spy_store }
 
-      it 'invalidates Etag caching for the job path' do
-        pipeline_path = "/#{project.full_path}/pipelines/#{pipeline.id}.json"
-        job_path = "/#{project.full_path}/builds/#{job.id}.json"
+          expect(spy_store).to receive(:touch)
+            .exactly(IdempotentWorkerHelper::WORKER_EXEC_TIMES).times
+            .with(pipeline_path)
+            .and_call_original
 
-        expect_any_instance_of(Gitlab::EtagCaching::Store).to receive(:touch).with(pipeline_path)
-        expect_any_instance_of(Gitlab::EtagCaching::Store).to receive(:touch).with(job_path)
+          expect(spy_store).to receive(:touch)
+            .exactly(IdempotentWorkerHelper::WORKER_EXEC_TIMES).times
+            .with(job_path)
+            .and_call_original
 
-        subject.perform(job.id)
+          subject
+        end
       end
     end
 
@@ -27,7 +39,7 @@ describe ExpireJobCacheWorker do
       it 'does not change the etag store' do
         expect(Gitlab::EtagCaching::Store).not_to receive(:new)
 
-        subject.perform(9999)
+        perform_multiple(9999)
       end
     end
   end