@Override
    public void onAlterDatabase(AlterDatabaseEvent dbEvent) throws MetaException {
      pushEventId(EventType.ALTER_DATABASE, dbEvent);
    }
Tests DbNotificationListener when used as a transactional event listener
(hive.metastore.transactional.event.listeners)
itests/hcatalog-unit/src/test/java/org/apache/hive/hcatalog/listener/TestDbNotificationListener.java