Cleanup bigint conversion for ci_stages

- remove column id_convert_to_bigint
- remove trigger_490d204c00b3 trigger and function

https://gitlab.com/gitlab-org/gitlab/-/issues/338066

Changelog: other

db/post_migrate/20210907021940_cleanup_bigint_conversion_for_ci_stages.rb

+# frozen_string_literal: true
+
+class CleanupBigintConversionForCiStages < Gitlab::Database::Migration[1.0]
+  disable_ddl_transaction!
+
+  TABLE = :ci_stages
+
+  # rubocop:disable Migration/WithLockRetriesDisallowedMethod
+  def up
+    with_lock_retries do
+      cleanup_conversion_of_integer_to_bigint(TABLE, :id)
+    end
+  end
+  # rubocop:enable Migration/WithLockRetriesDisallowedMethod
+
+  def down
+    restore_conversion_of_integer_to_bigint(TABLE, :id)
+  end
+end

db/schema_migrations/20210907021940

+53d1dee0bbe106eeaad3eda6e8012475cf4b59d30f78020c8d2ecf3499ff7e0f
\ No newline at end of file

db/structure.sql

@@ -71,15 +71,6 @@ BEGIN
 END;
 $$;
 
-CREATE FUNCTION trigger_490d204c00b3() RETURNS trigger
-    LANGUAGE plpgsql
-    AS $$
-BEGIN
-  NEW."id_convert_to_bigint" := NEW."id";
-  RETURN NEW;
-END;
-$$;
-
 CREATE FUNCTION trigger_51ab7cef8934() RETURNS trigger
     LANGUAGE plpgsql
     AS $$
@@ -12060,7 +12051,6 @@ CREATE SEQUENCE ci_sources_projects_id_seq
 ALTER SEQUENCE ci_sources_projects_id_seq OWNED BY ci_sources_projects.id;
 
 CREATE TABLE ci_stages (
-    id_convert_to_bigint integer DEFAULT 0 NOT NULL,
     project_id integer,
     pipeline_id integer,
     created_at timestamp without time zone,
@@ -27314,8 +27304,6 @@ CREATE TRIGGER trigger_21e7a2602957 BEFORE INSERT OR UPDATE ON ci_build_needs FO
 
 CREATE TRIGGER trigger_3f6129be01d2 BEFORE INSERT OR UPDATE ON ci_builds FOR EACH ROW EXECUTE FUNCTION trigger_3f6129be01d2();
 
-CREATE TRIGGER trigger_490d204c00b3 BEFORE INSERT OR UPDATE ON ci_stages FOR EACH ROW EXECUTE FUNCTION trigger_490d204c00b3();
-
 CREATE TRIGGER trigger_51ab7cef8934 BEFORE INSERT OR UPDATE ON ci_builds_runner_session FOR EACH ROW EXECUTE FUNCTION trigger_51ab7cef8934();
 
 CREATE TRIGGER trigger_542d6c2ad72e BEFORE INSERT OR UPDATE ON ci_builds_metadata FOR EACH ROW EXECUTE FUNCTION trigger_542d6c2ad72e();

lib/gitlab/database/migration_helpers.rb

@@ -984,6 +984,7 @@ module Gitlab
 
         temporary_columns.each { |column| remove_column(table, column) }
       end
+      alias_method :cleanup_conversion_of_integer_to_bigint, :revert_initialize_conversion_of_integer_to_bigint
 
       # Reverts `cleanup_conversion_of_integer_to_bigint`
       #