1 files changed, 1 insertions, 101 deletions
diff --git a/db/post_migrate/20230202211434_migrate_redis_slot_keys.rb b/db/post_migrate/20230202211434_migrate_redis_slot_keys.rb
index e1d3787cbb3..126555ae391 100644
--- a/db/post_migrate/20230202211434_migrate_redis_slot_keys.rb
+++ b/db/post_migrate/20230202211434_migrate_redis_slot_keys.rb
@@ -4,110 +4,10 @@ class MigrateRedisSlotKeys < Gitlab::Database::Migration[2.1]
   disable_ddl_transaction!
 
   def up
-    BackupHLLRedisCounter.known_events.each do |event|
-      if event[:aggregation].to_sym == :daily
-        migrate_daily_aggregated(event)
-      else
-        migrate_weekly_aggregated(event)
-      end
-    end
+    # deleted as contained a bug
   end
 
   def down
     # no-op
   end
-
-  private
-
-  def migrate_daily_aggregated(event)
-    days_back = BackupHLLRedisCounter::DEFAULT_DAILY_KEY_EXPIRY_LENGTH
-    start_date = Date.today - days_back - 1.day
-    end_date = Date.today + 1.day
-
-    (start_date..end_date).each do |date|
-      rename_key(event, date)
-    end
-  end
-
-  def migrate_weekly_aggregated(event)
-    weeks_back = BackupHLLRedisCounter::DEFAULT_WEEKLY_KEY_EXPIRY_LENGTH
-    start_date = (Date.today - weeks_back).beginning_of_week - 1.day
-    end_date = Date.today.end_of_week + 1.day
-
-    (start_date..end_date).each { |date| rename_key(event, date) }
-  end
-
-  def rename_key(event, date)
-    old_key = old_redis_key(event, date)
-    new_key = BackupHLLRedisCounter.redis_key(event, date)
-
-    # cannot simply rename due to different slots
-    Gitlab::Redis::SharedState.with do |r|
-      break unless r.exists?(old_key)
-
-      Gitlab::Redis::HLL.add(
-        key: new_key,
-        value: r.pfcount(old_key),
-        expiry: r.ttl(old_key)
-      )
-    end
-  end
-
-  def old_redis_key(event, time)
-    name_with_slot = if event[:redis_slot].present?
-                       event[:name].to_s.gsub(event[:redis_slot], "{#{event[:redis_slot]}}")
-                     else
-                       "{#{event[:name]}}"
-                     end
-
-    BackupHLLRedisCounter.apply_time_aggregation(name_with_slot, time, event)
-  end
-
-  # :nocov:  Existing backed up class # rubocop:disable Gitlab/NoCodeCoverageComment
-  module BackupHLLRedisCounter
-    DEFAULT_WEEKLY_KEY_EXPIRY_LENGTH = 6.weeks
-    DEFAULT_DAILY_KEY_EXPIRY_LENGTH = 29.days
-    REDIS_SLOT = 'hll_counters'
-
-    KNOWN_EVENTS_PATH = File.expand_path('known_events/*.yml', __dir__)
-    ALLOWED_AGGREGATIONS = %i[daily weekly].freeze
-
-    class << self
-      def known_events
-        @known_events ||= load_events(KNOWN_EVENTS_PATH)
-      end
-
-      def load_events(wildcard)
-        Dir[wildcard].each_with_object([]) do |path, events|
-          events.push(*load_yaml_from_path(path))
-        end
-      end
-
-      def load_yaml_from_path(path)
-        YAML.safe_load(File.read(path))&.map(&:with_indifferent_access)
-      end
-
-      def known_events_names
-        known_events.map { |event| event[:name] } # rubocop:disable Rails/Pluck
-      end
-
-      def redis_key(event, time, context = '')
-        key = "{#{REDIS_SLOT}}_#{event[:name]}"
-        key = apply_time_aggregation(key, time, event)
-        key = "#{context}_#{key}" if context.present?
-        key
-      end
-
-      def apply_time_aggregation(key, time, event)
-        if event[:aggregation].to_sym == :daily
-          year_day = time.strftime('%G-%j')
-          "#{year_day}-#{key}"
-        else
-          year_week = time.strftime('%G-%V')
-          "#{key}-#{year_week}"
-        end
-      end
-    end
-  end
-  # :nocov: # rubocop:disable Gitlab/NoCodeCoverageComment
 end