You cannot view new databases and tables, or cannot see changes to existing databases or
Verify whether the hive configuration parameter
hive.metastore.transactional.event.listeners is set to
org.apache.hive.hcatalog.listener.DbNotificationListener by going to Ambari > Hive > Configs > Advanced > Advanced hive-site.
Verify whether HSI or HS2 services are running by going to Ambari > Hive > Summary.