diff options
Diffstat (limited to 'db')
-rw-r--r-- | db/migrate/20160810142633_remove_redundant_indexes.rb | 112 | ||||
-rw-r--r-- | db/schema.rb | 56 |
2 files changed, 116 insertions, 52 deletions
diff --git a/db/migrate/20160810142633_remove_redundant_indexes.rb b/db/migrate/20160810142633_remove_redundant_indexes.rb new file mode 100644 index 00000000000..8641c6ffa8f --- /dev/null +++ b/db/migrate/20160810142633_remove_redundant_indexes.rb @@ -0,0 +1,112 @@ +# See http://doc.gitlab.com/ce/development/migration_style_guide.html +# for more information on how to write migrations for GitLab. + +class RemoveRedundantIndexes < ActiveRecord::Migration + include Gitlab::Database::MigrationHelpers + + DOWNTIME = false + + disable_ddl_transaction! + + def up + indexes = [ + [:ci_taggings, 'ci_taggings_idx'], + [:audit_events, 'index_audit_events_on_author_id'], + [:audit_events, 'index_audit_events_on_type'], + [:ci_builds, 'index_ci_builds_on_erased_by_id'], + [:ci_builds, 'index_ci_builds_on_project_id_and_commit_id'], + [:ci_builds, 'index_ci_builds_on_type'], + [:ci_commits, 'index_ci_commits_on_project_id'], + [:ci_commits, 'index_ci_commits_on_project_id_and_committed_at'], + [:ci_commits, 'index_ci_commits_on_project_id_and_committed_at_and_id'], + [:ci_commits, 'index_ci_commits_on_project_id_and_sha'], + [:ci_commits, 'index_ci_commits_on_sha'], + [:ci_events, 'index_ci_events_on_created_at'], + [:ci_events, 'index_ci_events_on_is_admin'], + [:ci_events, 'index_ci_events_on_project_id'], + [:ci_jobs, 'index_ci_jobs_on_deleted_at'], + [:ci_jobs, 'index_ci_jobs_on_project_id'], + [:ci_projects, 'index_ci_projects_on_gitlab_id'], + [:ci_projects, 'index_ci_projects_on_shared_runners_enabled'], + [:ci_services, 'index_ci_services_on_project_id'], + [:ci_sessions, 'index_ci_sessions_on_session_id'], + [:ci_sessions, 'index_ci_sessions_on_updated_at'], + [:ci_tags, 'index_ci_tags_on_name'], + [:ci_triggers, 'index_ci_triggers_on_deleted_at'], + [:identities, 'index_identities_on_created_at_and_id'], + [:issues, 'index_issues_on_title'], + [:keys, 'index_keys_on_created_at_and_id'], + [:members, 'index_members_on_created_at_and_id'], + [:members, 'index_members_on_type'], + [:milestones, 'index_milestones_on_created_at_and_id'], + [:namespaces, 'index_namespaces_on_visibility_level'], + [:projects, 'index_projects_on_builds_enabled_and_shared_runners_enabled'], + [:services, 'index_services_on_category'], + [:services, 'index_services_on_created_at_and_id'], + [:services, 'index_services_on_default'], + [:snippets, 'index_snippets_on_created_at'], + [:snippets, 'index_snippets_on_created_at_and_id'], + [:todos, 'index_todos_on_state'], + [:web_hooks, 'index_web_hooks_on_created_at_and_id'], + + # These indexes _may_ be used but they can be replaced by other existing + # indexes. + + # There's already a composite index on (project_id, iid) which means that + # a separate index for _just_ project_id is not needed. + [:issues, 'index_issues_on_project_id'], + + # These are all composite indexes for the columns (created_at, id). In all + # these cases there's already a standalone index for "created_at" which + # can be used instead. + # + # Because the "id" column of these composite indexes is never needed (due + # to "id" already being indexed as its a primary key) these composite + # indexes are useless. + [:issues, 'index_issues_on_created_at_and_id'], + [:merge_requests, 'index_merge_requests_on_created_at_and_id'], + [:namespaces, 'index_namespaces_on_created_at_and_id'], + [:notes, 'index_notes_on_created_at_and_id'], + [:projects, 'index_projects_on_created_at_and_id'], + [:users, 'index_users_on_created_at_and_id'], + ] + + transaction do + indexes.each do |(table, index)| + remove_index(table, name: index) if index_exists_by_name?(table, index) + end + end + + add_concurrent_index(:users, :created_at) + add_concurrent_index(:projects, :created_at) + add_concurrent_index(:namespaces, :created_at) + end + + def down + # We're only restoring the composite indexes that could be replaced with + # individual ones, just in case somebody would ever want to revert. + transaction do + remove_index(:users, :created_at) + remove_index(:projects, :created_at) + remove_index(:namespaces, :created_at) + end + + [:issues, :merge_requests, :namespaces, :notes, :projects, :users].each do |table| + add_concurrent_index(table, [:created_at, :id], + name: "index_#{table}_on_created_at_and_id") + end + end + + # Rails' index_exists? doesn't work when you only give it a table and index + # name. As such we have to use some extra code to check if an index exists for + # a given name. + def index_exists_by_name?(table, index) + indexes_for_table[table].include?(index) + end + + def indexes_for_table + @indexes_for_table ||= Hash.new do |hash, table_name| + hash[table_name] = indexes(table_name).map(&:name) + end + end +end diff --git a/db/schema.rb b/db/schema.rb index b795eeaa23c..059c923bb93 100644 --- a/db/schema.rb +++ b/db/schema.rb @@ -11,7 +11,7 @@ # # It's strongly recommended that you check this file into your version control system. -ActiveRecord::Schema.define(version: 20160810102349) do +ActiveRecord::Schema.define(version: 20160810142633) do # These are extensions that must be enabled in order to support this database enable_extension "plpgsql" @@ -102,9 +102,7 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.datetime "updated_at" end - add_index "audit_events", ["author_id"], name: "index_audit_events_on_author_id", using: :btree add_index "audit_events", ["entity_id", "entity_type"], name: "index_audit_events_on_entity_id_and_entity_type", using: :btree - add_index "audit_events", ["type"], name: "index_audit_events_on_type", using: :btree create_table "award_emoji", force: :cascade do |t| t.string "name" @@ -179,13 +177,10 @@ ActiveRecord::Schema.define(version: 20160810102349) do add_index "ci_builds", ["commit_id", "type", "name", "ref"], name: "index_ci_builds_on_commit_id_and_type_and_name_and_ref", using: :btree add_index "ci_builds", ["commit_id", "type", "ref"], name: "index_ci_builds_on_commit_id_and_type_and_ref", using: :btree add_index "ci_builds", ["commit_id"], name: "index_ci_builds_on_commit_id", using: :btree - add_index "ci_builds", ["erased_by_id"], name: "index_ci_builds_on_erased_by_id", using: :btree add_index "ci_builds", ["gl_project_id"], name: "index_ci_builds_on_gl_project_id", using: :btree - add_index "ci_builds", ["project_id", "commit_id"], name: "index_ci_builds_on_project_id_and_commit_id", using: :btree add_index "ci_builds", ["project_id"], name: "index_ci_builds_on_project_id", using: :btree add_index "ci_builds", ["runner_id"], name: "index_ci_builds_on_runner_id", using: :btree add_index "ci_builds", ["status"], name: "index_ci_builds_on_status", using: :btree - add_index "ci_builds", ["type"], name: "index_ci_builds_on_type", using: :btree create_table "ci_commits", force: :cascade do |t| t.integer "project_id" @@ -209,11 +204,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do add_index "ci_commits", ["gl_project_id", "sha"], name: "index_ci_commits_on_gl_project_id_and_sha", using: :btree add_index "ci_commits", ["gl_project_id", "status"], name: "index_ci_commits_on_gl_project_id_and_status", using: :btree add_index "ci_commits", ["gl_project_id"], name: "index_ci_commits_on_gl_project_id", using: :btree - add_index "ci_commits", ["project_id", "committed_at", "id"], name: "index_ci_commits_on_project_id_and_committed_at_and_id", using: :btree - add_index "ci_commits", ["project_id", "committed_at"], name: "index_ci_commits_on_project_id_and_committed_at", using: :btree - add_index "ci_commits", ["project_id", "sha"], name: "index_ci_commits_on_project_id_and_sha", using: :btree - add_index "ci_commits", ["project_id"], name: "index_ci_commits_on_project_id", using: :btree - add_index "ci_commits", ["sha"], name: "index_ci_commits_on_sha", using: :btree add_index "ci_commits", ["status"], name: "index_ci_commits_on_status", using: :btree add_index "ci_commits", ["user_id"], name: "index_ci_commits_on_user_id", using: :btree @@ -226,10 +216,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.datetime "updated_at" end - add_index "ci_events", ["created_at"], name: "index_ci_events_on_created_at", using: :btree - add_index "ci_events", ["is_admin"], name: "index_ci_events_on_is_admin", using: :btree - add_index "ci_events", ["project_id"], name: "index_ci_events_on_project_id", using: :btree - create_table "ci_jobs", force: :cascade do |t| t.integer "project_id", null: false t.text "commands" @@ -244,9 +230,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.datetime "deleted_at" end - add_index "ci_jobs", ["deleted_at"], name: "index_ci_jobs_on_deleted_at", using: :btree - add_index "ci_jobs", ["project_id"], name: "index_ci_jobs_on_project_id", using: :btree - create_table "ci_projects", force: :cascade do |t| t.string "name" t.integer "timeout", default: 3600, null: false @@ -270,9 +253,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.text "generated_yaml_config" end - add_index "ci_projects", ["gitlab_id"], name: "index_ci_projects_on_gitlab_id", using: :btree - add_index "ci_projects", ["shared_runners_enabled"], name: "index_ci_projects_on_shared_runners_enabled", using: :btree - create_table "ci_runner_projects", force: :cascade do |t| t.integer "runner_id", null: false t.integer "project_id" @@ -314,8 +294,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.text "properties" end - add_index "ci_services", ["project_id"], name: "index_ci_services_on_project_id", using: :btree - create_table "ci_sessions", force: :cascade do |t| t.string "session_id", null: false t.text "data" @@ -323,9 +301,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.datetime "updated_at" end - add_index "ci_sessions", ["session_id"], name: "index_ci_sessions_on_session_id", using: :btree - add_index "ci_sessions", ["updated_at"], name: "index_ci_sessions_on_updated_at", using: :btree - create_table "ci_taggings", force: :cascade do |t| t.integer "tag_id" t.integer "taggable_id" @@ -336,7 +311,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.datetime "created_at" end - add_index "ci_taggings", ["tag_id", "taggable_id", "taggable_type", "context", "tagger_id", "tagger_type"], name: "ci_taggings_idx", unique: true, using: :btree add_index "ci_taggings", ["taggable_id", "taggable_type", "context"], name: "index_ci_taggings_on_taggable_id_and_taggable_type_and_context", using: :btree create_table "ci_tags", force: :cascade do |t| @@ -344,8 +318,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.integer "taggings_count", default: 0 end - add_index "ci_tags", ["name"], name: "index_ci_tags_on_name", unique: true, using: :btree - create_table "ci_trigger_requests", force: :cascade do |t| t.integer "trigger_id", null: false t.text "variables" @@ -363,7 +335,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.integer "gl_project_id" end - add_index "ci_triggers", ["deleted_at"], name: "index_ci_triggers_on_deleted_at", using: :btree add_index "ci_triggers", ["gl_project_id"], name: "index_ci_triggers_on_gl_project_id", using: :btree create_table "ci_variables", force: :cascade do |t| @@ -469,7 +440,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.datetime "updated_at" end - add_index "identities", ["created_at", "id"], name: "index_identities_on_created_at_and_id", using: :btree add_index "identities", ["user_id"], name: "index_identities_on_user_id", using: :btree create_table "issues", force: :cascade do |t| @@ -495,16 +465,13 @@ ActiveRecord::Schema.define(version: 20160810102349) do add_index "issues", ["assignee_id"], name: "index_issues_on_assignee_id", using: :btree add_index "issues", ["author_id"], name: "index_issues_on_author_id", using: :btree add_index "issues", ["confidential"], name: "index_issues_on_confidential", using: :btree - add_index "issues", ["created_at", "id"], name: "index_issues_on_created_at_and_id", using: :btree add_index "issues", ["created_at"], name: "index_issues_on_created_at", using: :btree add_index "issues", ["deleted_at"], name: "index_issues_on_deleted_at", using: :btree add_index "issues", ["description"], name: "index_issues_on_description_trigram", using: :gin, opclasses: {"description"=>"gin_trgm_ops"} add_index "issues", ["due_date"], name: "index_issues_on_due_date", using: :btree add_index "issues", ["milestone_id"], name: "index_issues_on_milestone_id", using: :btree add_index "issues", ["project_id", "iid"], name: "index_issues_on_project_id_and_iid", unique: true, using: :btree - add_index "issues", ["project_id"], name: "index_issues_on_project_id", using: :btree add_index "issues", ["state"], name: "index_issues_on_state", using: :btree - add_index "issues", ["title"], name: "index_issues_on_title", using: :btree add_index "issues", ["title"], name: "index_issues_on_title_trigram", using: :gin, opclasses: {"title"=>"gin_trgm_ops"} create_table "keys", force: :cascade do |t| @@ -518,7 +485,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.boolean "public", default: false, null: false end - add_index "keys", ["created_at", "id"], name: "index_keys_on_created_at_and_id", using: :btree add_index "keys", ["fingerprint"], name: "index_keys_on_fingerprint", unique: true, using: :btree add_index "keys", ["user_id"], name: "index_keys_on_user_id", using: :btree @@ -583,11 +549,9 @@ ActiveRecord::Schema.define(version: 20160810102349) do end add_index "members", ["access_level"], name: "index_members_on_access_level", using: :btree - add_index "members", ["created_at", "id"], name: "index_members_on_created_at_and_id", using: :btree add_index "members", ["invite_token"], name: "index_members_on_invite_token", unique: true, using: :btree add_index "members", ["requested_at"], name: "index_members_on_requested_at", using: :btree add_index "members", ["source_id", "source_type"], name: "index_members_on_source_id_and_source_type", using: :btree - add_index "members", ["type"], name: "index_members_on_type", using: :btree add_index "members", ["user_id"], name: "index_members_on_user_id", using: :btree create_table "merge_request_diffs", force: :cascade do |t| @@ -634,7 +598,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do add_index "merge_requests", ["assignee_id"], name: "index_merge_requests_on_assignee_id", using: :btree add_index "merge_requests", ["author_id"], name: "index_merge_requests_on_author_id", using: :btree - add_index "merge_requests", ["created_at", "id"], name: "index_merge_requests_on_created_at_and_id", using: :btree add_index "merge_requests", ["created_at"], name: "index_merge_requests_on_created_at", using: :btree add_index "merge_requests", ["deleted_at"], name: "index_merge_requests_on_deleted_at", using: :btree add_index "merge_requests", ["description"], name: "index_merge_requests_on_description_trigram", using: :gin, opclasses: {"description"=>"gin_trgm_ops"} @@ -657,7 +620,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.integer "iid" end - add_index "milestones", ["created_at", "id"], name: "index_milestones_on_created_at_and_id", using: :btree add_index "milestones", ["description"], name: "index_milestones_on_description_trigram", using: :gin, opclasses: {"description"=>"gin_trgm_ops"} add_index "milestones", ["due_date"], name: "index_milestones_on_due_date", using: :btree add_index "milestones", ["project_id", "iid"], name: "index_milestones_on_project_id_and_iid", unique: true, using: :btree @@ -679,14 +641,13 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.boolean "request_access_enabled", default: true, null: false end - add_index "namespaces", ["created_at", "id"], name: "index_namespaces_on_created_at_and_id", using: :btree + add_index "namespaces", ["created_at"], name: "index_namespaces_on_created_at", using: :btree add_index "namespaces", ["name"], name: "index_namespaces_on_name", unique: true, using: :btree add_index "namespaces", ["name"], name: "index_namespaces_on_name_trigram", using: :gin, opclasses: {"name"=>"gin_trgm_ops"} add_index "namespaces", ["owner_id"], name: "index_namespaces_on_owner_id", using: :btree add_index "namespaces", ["path"], name: "index_namespaces_on_path", unique: true, using: :btree add_index "namespaces", ["path"], name: "index_namespaces_on_path_trigram", using: :gin, opclasses: {"path"=>"gin_trgm_ops"} add_index "namespaces", ["type"], name: "index_namespaces_on_type", using: :btree - add_index "namespaces", ["visibility_level"], name: "index_namespaces_on_visibility_level", using: :btree create_table "notes", force: :cascade do |t| t.text "note" @@ -709,7 +670,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do add_index "notes", ["author_id"], name: "index_notes_on_author_id", using: :btree add_index "notes", ["commit_id"], name: "index_notes_on_commit_id", using: :btree - add_index "notes", ["created_at", "id"], name: "index_notes_on_created_at_and_id", using: :btree add_index "notes", ["created_at"], name: "index_notes_on_created_at", using: :btree add_index "notes", ["line_code"], name: "index_notes_on_line_code", using: :btree add_index "notes", ["note"], name: "index_notes_on_note_trigram", using: :gin, opclasses: {"note"=>"gin_trgm_ops"} @@ -849,9 +809,8 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.boolean "request_access_enabled", default: true, null: false end - add_index "projects", ["builds_enabled", "shared_runners_enabled"], name: "index_projects_on_builds_enabled_and_shared_runners_enabled", using: :btree add_index "projects", ["ci_id"], name: "index_projects_on_ci_id", using: :btree - add_index "projects", ["created_at", "id"], name: "index_projects_on_created_at_and_id", using: :btree + add_index "projects", ["created_at"], name: "index_projects_on_created_at", using: :btree add_index "projects", ["creator_id"], name: "index_projects_on_creator_id", using: :btree add_index "projects", ["description"], name: "index_projects_on_description_trigram", using: :gin, opclasses: {"description"=>"gin_trgm_ops"} add_index "projects", ["last_activity_at"], name: "index_projects_on_last_activity_at", using: :btree @@ -937,9 +896,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.boolean "wiki_page_events", default: true end - add_index "services", ["category"], name: "index_services_on_category", using: :btree - add_index "services", ["created_at", "id"], name: "index_services_on_created_at_and_id", using: :btree - add_index "services", ["default"], name: "index_services_on_default", using: :btree add_index "services", ["project_id"], name: "index_services_on_project_id", using: :btree add_index "services", ["template"], name: "index_services_on_template", using: :btree @@ -956,8 +912,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do end add_index "snippets", ["author_id"], name: "index_snippets_on_author_id", using: :btree - add_index "snippets", ["created_at", "id"], name: "index_snippets_on_created_at_and_id", using: :btree - add_index "snippets", ["created_at"], name: "index_snippets_on_created_at", using: :btree add_index "snippets", ["file_name"], name: "index_snippets_on_file_name_trigram", using: :gin, opclasses: {"file_name"=>"gin_trgm_ops"} add_index "snippets", ["project_id"], name: "index_snippets_on_project_id", using: :btree add_index "snippets", ["title"], name: "index_snippets_on_title_trigram", using: :gin, opclasses: {"title"=>"gin_trgm_ops"} @@ -1026,7 +980,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do add_index "todos", ["commit_id"], name: "index_todos_on_commit_id", using: :btree add_index "todos", ["note_id"], name: "index_todos_on_note_id", using: :btree add_index "todos", ["project_id"], name: "index_todos_on_project_id", using: :btree - add_index "todos", ["state"], name: "index_todos_on_state", using: :btree add_index "todos", ["target_type", "target_id"], name: "index_todos_on_target_type_and_target_id", using: :btree add_index "todos", ["user_id"], name: "index_todos_on_user_id", using: :btree @@ -1106,7 +1059,7 @@ ActiveRecord::Schema.define(version: 20160810102349) do add_index "users", ["admin"], name: "index_users_on_admin", using: :btree add_index "users", ["authentication_token"], name: "index_users_on_authentication_token", unique: true, using: :btree add_index "users", ["confirmation_token"], name: "index_users_on_confirmation_token", unique: true, using: :btree - add_index "users", ["created_at", "id"], name: "index_users_on_created_at_and_id", using: :btree + add_index "users", ["created_at"], name: "index_users_on_created_at", using: :btree add_index "users", ["current_sign_in_at"], name: "index_users_on_current_sign_in_at", using: :btree add_index "users", ["email"], name: "index_users_on_email", unique: true, using: :btree add_index "users", ["email"], name: "index_users_on_email_trigram", using: :gin, opclasses: {"email"=>"gin_trgm_ops"} @@ -1146,7 +1099,6 @@ ActiveRecord::Schema.define(version: 20160810102349) do t.string "token" end - add_index "web_hooks", ["created_at", "id"], name: "index_web_hooks_on_created_at_and_id", using: :btree add_index "web_hooks", ["project_id"], name: "index_web_hooks_on_project_id", using: :btree add_foreign_key "personal_access_tokens", "users" |