1 files changed, 0 insertions, 88 deletions
diff --git a/db/post_migrate/20210806131706_finalize_taggins_bigint_conversion.rb b/db/post_migrate/20210806131706_finalize_taggins_bigint_conversion.rb
deleted file mode 100644
index 5f094e48ed4..00000000000
--- a/db/post_migrate/20210806131706_finalize_taggins_bigint_conversion.rb
+++ /dev/null
@@ -1,88 +0,0 @@
-# frozen_string_literal: true
-
-class FinalizeTagginsBigintConversion < ActiveRecord::Migration[6.1]
-  include Gitlab::Database::MigrationHelpers
-
-  disable_ddl_transaction!
-
-  TABLE_NAME = 'taggings'
-
-  def up
-    ensure_batched_background_migration_is_finished(
-      job_class_name: 'CopyColumnUsingBackgroundMigrationJob',
-      table_name: TABLE_NAME,
-      column_name: 'id',
-      job_arguments: [%w[id taggable_id], %w[id_convert_to_bigint taggable_id_convert_to_bigint]]
-    )
-
-    swap
-  end
-
-  def down
-    swap
-  end
-
-  private
-
-  def swap
-    # rubocop:disable Migration/PreventIndexCreation
-    add_concurrent_index TABLE_NAME, :id_convert_to_bigint, unique: true, name: 'index_taggings_on_id_convert_to_bigint'
-
-    # This is to replace the existing "index_taggings_on_taggable_id_and_taggable_type" btree (taggable_id, taggable_type)
-    add_concurrent_index TABLE_NAME, [:taggable_id_convert_to_bigint, :taggable_type], name: 'i_taggings_on_taggable_id_convert_to_bigint_and_taggable_type'
-
-    # This is to replace the existing "index_taggings_on_taggable_id_and_taggable_type_and_context" btree (taggable_id, taggable_type, context)
-    add_concurrent_index TABLE_NAME, [:taggable_id_convert_to_bigint, :taggable_type, :context], name: 'i_taggings_on_taggable_bigint_and_taggable_type_and_context'
-
-    # This is to replace the existing "taggings_idx" btree (tag_id, taggable_id, taggable_type, context, tagger_id, tagger_type)
-    add_concurrent_index TABLE_NAME, [:tag_id, :taggable_id_convert_to_bigint, :taggable_type, :context, :tagger_id, :tagger_type], unique: true, name: 'taggings_idx_tmp'
-
-    # This is to replace the existing "tmp_index_taggings_on_id_where_taggable_type_project" btree (id) WHERE taggable_type::text = 'Project'::text
-    add_concurrent_index TABLE_NAME, :id_convert_to_bigint, where: "taggable_type = 'Project'", name: 'tmp_index_taggings_on_id_bigint_where_taggable_type_project'
-    # rubocop:enable Migration/PreventIndexCreation
-
-    with_lock_retries(raise_on_exhaustion: true) do
-      # We'll need  ACCESS EXCLUSIVE lock on the related tables,
-      # lets make sure it can be acquired from the start
-      execute "LOCK TABLE #{TABLE_NAME} IN ACCESS EXCLUSIVE MODE"
-
-      # Swap column names
-      temp_name = 'taggable_id_tmp'
-      execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:taggable_id)} TO #{quote_column_name(temp_name)}"
-      execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:taggable_id_convert_to_bigint)} TO #{quote_column_name(:taggable_id)}"
-      execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(temp_name)} TO #{quote_column_name(:taggable_id_convert_to_bigint)}"
-
-      temp_name = 'id_tmp'
-      execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:id)} TO #{quote_column_name(temp_name)}"
-      execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:id_convert_to_bigint)} TO #{quote_column_name(:id)}"
-      execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(temp_name)} TO #{quote_column_name(:id_convert_to_bigint)}"
-
-      # We need to update the trigger function in order to make PostgreSQL to
-      # regenerate the execution plan for it. This is to avoid type mismatch errors like
-      # "type of parameter 15 (bigint) does not match that when preparing the plan (integer)"
-      function_name = Gitlab::Database::UnidirectionalCopyTrigger.on_table(TABLE_NAME, connection: connection).name([:id, :taggable_id], [:id_convert_to_bigint, :taggable_id_convert_to_bigint])
-      execute "ALTER FUNCTION #{quote_table_name(function_name)} RESET ALL"
-
-      # Swap defaults
-      execute "ALTER SEQUENCE taggings_id_seq OWNED BY #{TABLE_NAME}.id"
-      change_column_default TABLE_NAME, :id, -> { "nextval('taggings_id_seq'::regclass)" }
-      change_column_default TABLE_NAME, :id_convert_to_bigint, 0
-
-      # Swap PK constraint
-      execute "ALTER TABLE #{TABLE_NAME} DROP CONSTRAINT taggings_pkey CASCADE"
-      rename_index TABLE_NAME, 'index_taggings_on_id_convert_to_bigint', 'taggings_pkey'
-      execute "ALTER TABLE #{TABLE_NAME} ADD CONSTRAINT taggings_pkey PRIMARY KEY USING INDEX taggings_pkey"
-
-      # Rename the index on the `bigint` column to match the new column name
-      # (we already hold an exclusive lock, so no need to use DROP INDEX CONCURRENTLY here)
-      execute 'DROP INDEX IF EXISTS index_taggings_on_taggable_id_and_taggable_type'
-      rename_index TABLE_NAME, 'i_taggings_on_taggable_id_convert_to_bigint_and_taggable_type', 'index_taggings_on_taggable_id_and_taggable_type'
-      execute 'DROP INDEX IF EXISTS index_taggings_on_taggable_id_and_taggable_type_and_context'
-      rename_index TABLE_NAME, 'i_taggings_on_taggable_bigint_and_taggable_type_and_context', 'index_taggings_on_taggable_id_and_taggable_type_and_context'
-      execute 'DROP INDEX IF EXISTS taggings_idx'
-      rename_index TABLE_NAME, 'taggings_idx_tmp', 'taggings_idx'
-      execute 'DROP INDEX IF EXISTS tmp_index_taggings_on_id_where_taggable_type_project'
-      rename_index TABLE_NAME, 'tmp_index_taggings_on_id_bigint_where_taggable_type_project', 'tmp_index_taggings_on_id_where_taggable_type_project'
-    end
-  end
-end