# See http://doc.gitlab.com/ce/development/migration_style_guide.html # for more information on how to write migrations for GitLab. class RemoveIndexFromEventsTable < ActiveRecord::Migration[4.2] include Gitlab::Database::MigrationHelpers DOWNTIME = false disable_ddl_transaction! def up remove_concurrent_index :events, :author_id end def down add_concurrent_index :events, :author_id end end