Application not running message
Application not running message from TEZ that appears
in the YARN application log prevents confusion when inspecting Hive queries.
During startup, HiveServer starts sessions that are available until
tez.session.am.dag.submit.timeout.secs expires, and then the Application
Masters are killed. HiveServer transparently restarts dead AMs on demand when you run another
query. HiveServer tries to clean up sessions from the Tez pool during shutdown. "Application not
running" message in a stack trace logging is not an issue. This message is just a trace logged
when the session is closed or restarted and the AM has timed out.