You cannot see your databases or the query editor is missing

Verify whether HSI or HS2 services are running by going to Ambari > Hive > Summary.
If you are not running llap, then set the use.hive.interactive.mode parameter to false in the das-event-processor.json and the das-webapp.json files. The use.hive.interactive.mode parameter is present under the dasConf section.
To change this config, go to Ambari > Data Analytics Studio > Config > Advanced data_analytics_studio-event_processor-properties > Data Analytics Studio Event Processor config file template and Advanced data_analytics_studio-webapp-properties > Data Analytics Studio Webapp config file template respectively.
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.
DAS event processor runs the repl dump command as a hive service user. The hive service user can run the repl dump command if the user has repl admin privileges.
Verify whether DAS can read the repl root directory permissions - if das and hive are running as different service users.

There may be exceptions in the /var/log/das/event-processor.log file with repl dump failures because of read errors.
Note
If the das services cannot read the repl root directory permissions, then it can cause a number of repl directories to be created, but not deleted.
Lastly, this can be caused due to incorrect hive service name in ZooKeeper. This is a known issue as of the DAS 1.2.0 release.

	Note
	If the das services cannot read the repl root directory permissions, then it can cause a number of repl directories to be created, but not deleted.