Revert "Merge branch '288005-finalize-push-events-payloads-bigint-conversion-take-2' into 'master'"

This reverts merge request !65795

db/post_migrate/20210709024048_finalize_push_event_payloads_bigint_conversion_2.rb

@@ -3,69 +3,11 @@
 class FinalizePushEventPayloadsBigintConversion2 < ActiveRecord::Migration[6.1]
   include Gitlab::Database::MigrationHelpers
 
-  disable_ddl_transaction!
-
-  TABLE_NAME = 'push_event_payloads'
-  INDEX_NAME = 'index_push_event_payloads_on_event_id_convert_to_bigint'
-
   def up
-    ensure_batched_background_migration_is_finished(
-      job_class_name: 'CopyColumnUsingBackgroundMigrationJob',
-      table_name: TABLE_NAME,
-      column_name: 'event_id',
-      job_arguments: [["event_id"], ["event_id_convert_to_bigint"]]
-    )
-
-    swap_columns
+    # no-op due to https://gitlab.com/gitlab-com/gl-infra/production/-/issues/5256
   end
 
   def down
-    swap_columns
-  end
-
-  private
-
-  def swap_columns
-    add_concurrent_index TABLE_NAME, :event_id_convert_to_bigint, unique: true, name: INDEX_NAME
-
-    # Add a foreign key on `event_id_convert_to_bigint` before we swap the columns and drop the old FK (fk_36c74129da)
-    add_concurrent_foreign_key TABLE_NAME, :events, column: :event_id_convert_to_bigint, on_delete: :cascade
-
-    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}, events IN ACCESS EXCLUSIVE MODE"
-
-      # Swap column names
-      temp_name = 'event_id_tmp'
-      execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:event_id)} TO #{quote_column_name(temp_name)}"
-      execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:event_id_convert_to_bigint)} TO #{quote_column_name(:event_id)}"
-      execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(temp_name)} TO #{quote_column_name(:event_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).name(:event_id, :event_id_convert_to_bigint)
-      execute "ALTER FUNCTION #{quote_table_name(function_name)} RESET ALL"
-
-      # Swap defaults
-      change_column_default TABLE_NAME, :event_id, nil
-      change_column_default TABLE_NAME, :event_id_convert_to_bigint, 0
-
-      # Swap PK constraint
-      execute "ALTER TABLE #{TABLE_NAME} DROP CONSTRAINT push_event_payloads_pkey"
-      rename_index TABLE_NAME, INDEX_NAME, 'push_event_payloads_pkey'
-      execute "ALTER TABLE #{TABLE_NAME} ADD CONSTRAINT push_event_payloads_pkey PRIMARY KEY USING INDEX push_event_payloads_pkey"
-
-      # Drop original FK on the old int4 `event_id` (fk_36c74129da)
-      remove_foreign_key TABLE_NAME, name: concurrent_foreign_key_name(TABLE_NAME, :event_id)
-      # We swapped the columns but the FK for event_id is still using the old name for the event_id_convert_to_bigint column
-      # So we have to also swap the FK name now that we dropped the other one with the same
-      rename_constraint(
-        TABLE_NAME,
-        concurrent_foreign_key_name(TABLE_NAME, :event_id_convert_to_bigint),
-        concurrent_foreign_key_name(TABLE_NAME, :event_id)
-      )
-    end
+    # no-op due to https://gitlab.com/gitlab-com/gl-infra/production/-/issues/5256
   end
 end

db/structure.sql

@@ -17561,7 +17561,7 @@ ALTER SEQUENCE protected_tags_id_seq OWNED BY protected_tags.id;
 
 CREATE TABLE push_event_payloads (
     commit_count bigint NOT NULL,
-    event_id_convert_to_bigint integer DEFAULT 0 NOT NULL,
+    event_id integer NOT NULL,
     action smallint NOT NULL,
     ref_type smallint NOT NULL,
     commit_from bytea,
@@ -17569,7 +17569,7 @@ CREATE TABLE push_event_payloads (
     ref text,
     commit_title character varying(70),
     ref_count integer,
-    event_id bigint NOT NULL
+    event_id_convert_to_bigint bigint DEFAULT 0 NOT NULL
 );
 
 CREATE TABLE push_rules (