1 files changed, 0 insertions, 81 deletions
diff --git a/lib/gitlab/background_migration/delete_diff_files.rb b/lib/gitlab/background_migration/delete_diff_files.rb
deleted file mode 100644
index 664ead1af44..00000000000
--- a/lib/gitlab/background_migration/delete_diff_files.rb
+++ /dev/null
@@ -1,81 +0,0 @@
-# frozen_string_literal: true
-# rubocop:disable Style/Documentation
-
-module Gitlab
-  module BackgroundMigration
-    class DeleteDiffFiles
-      class MergeRequestDiff < ActiveRecord::Base
-        self.table_name = 'merge_request_diffs'
-
-        belongs_to :merge_request
-        has_many :merge_request_diff_files
-      end
-
-      class MergeRequestDiffFile < ActiveRecord::Base
-        self.table_name = 'merge_request_diff_files'
-      end
-
-      DEAD_TUPLES_THRESHOLD = 50_000
-      VACUUM_WAIT_TIME = 5.minutes
-
-      def perform(ids)
-        @ids = ids
-
-        # We should reschedule until deadtuples get in a desirable
-        # state (e.g. < 50_000). That may take more than one reschedule.
-        #
-        if should_wait_deadtuple_vacuum?
-          reschedule
-          return
-        end
-
-        prune_diff_files
-      end
-
-      def should_wait_deadtuple_vacuum?
-        return false unless Gitlab::Database.postgresql?
-
-        diff_files_dead_tuples_count >= DEAD_TUPLES_THRESHOLD
-      end
-
-      private
-
-      def reschedule
-        BackgroundMigrationWorker.perform_in(VACUUM_WAIT_TIME, self.class.name.demodulize, [@ids])
-      end
-
-      def diffs_collection
-        MergeRequestDiff.where(id: @ids)
-      end
-
-      def diff_files_dead_tuples_count
-        dead_tuple =
-          execute_statement("SELECT n_dead_tup FROM pg_stat_all_tables "\
-                            "WHERE relname = 'merge_request_diff_files'")[0]
-
-        dead_tuple&.fetch('n_dead_tup', 0).to_i
-      end
-
-      def prune_diff_files
-        removed = 0
-        updated = 0
-
-        MergeRequestDiff.transaction do
-          updated = diffs_collection.update_all(state: 'without_files')
-          removed = MergeRequestDiffFile.where(merge_request_diff_id: @ids).delete_all
-        end
-
-        log_info("Removed #{removed} merge_request_diff_files rows, "\
-                 "updated #{updated} merge_request_diffs rows")
-      end
-
-      def execute_statement(sql)
-        ActiveRecord::Base.connection.execute(sql)
-      end
-
-      def log_info(message)
-        Rails.logger.info("BackgroundMigration::DeleteDiffFiles - #{message}")
-      end
-    end
-  end
-end