Address the PK Overflow risk for the taggins - Step 3

- Remove id_convert_to_bigint and taggable_id_convert_to_bigint columns
- Remove trigger_aebe8b822ad3 trigger

Related to https://gitlab.com/gitlab-org/gitlab/-/issues/338055

Changelog: added

config/initializers/0_acts_as_taggable.rb

@@ -11,8 +11,8 @@ raise "Counter cache is not disabled" if
     ActsAsTaggableOn::Tagging.reflections["tag"].options[:counter_cache]
 
 ActsAsTaggableOn::Tagging.include IgnorableColumns
-ActsAsTaggableOn::Tagging.ignore_column :id_convert_to_bigint, remove_with: '14.2', remove_after: '2021-08-22'
-ActsAsTaggableOn::Tagging.ignore_column :taggable_id_convert_to_bigint, remove_with: '14.2', remove_after: '2021-08-22'
+ActsAsTaggableOn::Tagging.ignore_column :id_convert_to_bigint, remove_with: '14.5', remove_after: '2021-10-22'
+ActsAsTaggableOn::Tagging.ignore_column :taggable_id_convert_to_bigint, remove_with: '14.5', remove_after: '2021-10-22'
 
 # The tags and taggings are supposed to be part of `gitlab_ci`
 ActsAsTaggableOn::Tag.gitlab_schema = :gitlab_ci

db/post_migrate/20210906130643_drop_temporary_columns_and_triggers_for_taggings.rb

+# frozen_string_literal: true
+
+class DropTemporaryColumnsAndTriggersForTaggings < Gitlab::Database::Migration[1.0]
+  enable_lock_retries!
+
+  TABLE = 'taggings'
+  COLUMNS = %w(id taggable_id)
+
+  # rubocop:disable Migration/WithLockRetriesDisallowedMethod
+  def up
+    cleanup_conversion_of_integer_to_bigint(TABLE, COLUMNS)
+  end
+  # rubocop:enable Migration/WithLockRetriesDisallowedMethod
+
+  def down
+    restore_conversion_of_integer_to_bigint(TABLE, COLUMNS)
+  end
+end

db/schema_migrations/20210906130643

+c707c0879e439de95f24f8fe2084388276a46c5e0ee30e4134a43e22ca19b4ec
\ No newline at end of file

db/structure.sql

@@ -86,16 +86,6 @@ BEGIN
 END;
 $$;
 
-CREATE FUNCTION trigger_aebe8b822ad3() RETURNS trigger
-    LANGUAGE plpgsql
-    AS $$
-BEGIN
-  NEW."id_convert_to_bigint" := NEW."id";
-  NEW."taggable_id_convert_to_bigint" := NEW."taggable_id";
-  RETURN NEW;
-END;
-$$;
-
 CREATE TABLE audit_events (
     id bigint NOT NULL,
     author_id integer NOT NULL,
@@ -19414,9 +19404,7 @@ CREATE SEQUENCE system_note_metadata_id_seq
 ALTER SEQUENCE system_note_metadata_id_seq OWNED BY system_note_metadata.id;
 
 CREATE TABLE taggings (
-    id_convert_to_bigint integer DEFAULT 0 NOT NULL,
     tag_id integer,
-    taggable_id_convert_to_bigint integer,
     taggable_type character varying,
     tagger_id integer,
     tagger_type character varying,
@@ -27339,8 +27327,6 @@ ALTER INDEX product_analytics_events_experimental_pkey ATTACH PARTITION gitlab_p
 
 CREATE TRIGGER trigger_91dc388a5fe6 BEFORE INSERT OR UPDATE ON dep_ci_build_trace_sections FOR EACH ROW EXECUTE FUNCTION trigger_91dc388a5fe6();
 
-CREATE TRIGGER trigger_aebe8b822ad3 BEFORE INSERT OR UPDATE ON taggings FOR EACH ROW EXECUTE FUNCTION trigger_aebe8b822ad3();
-
 CREATE TRIGGER trigger_delete_project_namespace_on_project_delete AFTER DELETE ON projects FOR EACH ROW WHEN ((old.project_namespace_id IS NOT NULL)) EXECUTE FUNCTION delete_associated_project_namespace();
 
 CREATE TRIGGER trigger_has_external_issue_tracker_on_delete AFTER DELETE ON integrations FOR EACH ROW WHEN ((((old.category)::text = 'issue_tracker'::text) AND (old.active = true) AND (old.project_id IS NOT NULL))) EXECUTE FUNCTION set_has_external_issue_tracker();

spec/migrations/20210906130643_drop_temporary_columns_and_triggers_for_taggings_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+require_migration!('drop_temporary_columns_and_triggers_for_taggings')
+
+RSpec.describe DropTemporaryColumnsAndTriggersForTaggings do
+  let(:taggings_table) { table(:taggings) }
+
+  it 'correctly migrates up and down' do
+    reversible_migration do |migration|
+      migration.before -> {
+        expect(taggings_table.column_names).to include('id_convert_to_bigint')
+        expect(taggings_table.column_names).to include('taggable_id_convert_to_bigint')
+      }
+
+      migration.after -> {
+        taggings_table.reset_column_information
+        expect(taggings_table.column_names).not_to include('id_convert_to_bigint')
+        expect(taggings_table.column_names).not_to include('taggable_id_convert_to_bigint')
+      }
+    end
+  end
+end