[HIVE-20138] Sessions: Closing Tez sessions if opened outside of default sessions throws NPE

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Tez
• Assignee: Unassigned
• Reporter: Gopal Vijayaraghavan
• Created: 11/Jul/18 05:37
• Updated: 12/Jul/18 04:28

Description

On a busy cluster, if a session is currently in ACCEPTED state (i.e YARN hasn't started it yet), running a query will NPE.

java.lang.NullPointerException: null
        at org.apache.hadoop.hive.ql.exec.tez.TezSessionState.getSession(TezSessionState.java:711) ~[hive-exec-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]
        at org.apache.hadoop.hive.ql.exec.tez.TezSessionState.close(TezSessionState.java:646) ~[hive-exec-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]
        at org.apache.hadoop.hive.ql.exec.tez.TezSessionPoolManager.closeIfNotDefault(TezSessionPoolManager.java:353) ~[hive-exec-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]
        at org.apache.hadoop.hive.ql.exec.tez.TezSessionPoolManager.getSession(TezSessionPoolManager.java:467) ~[hive-exec-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]
        at org.apache.hadoop.hive.ql.exec.tez.WorkloadManagerFederation.getUnmanagedSession(WorkloadManagerFederation.java:66) ~[hive-exec-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]
        at org.apache.hadoop.hive.ql.exec.tez.WorkloadManagerFederation.getSession(WorkloadManagerFederation.java:38) ~[hive-exec-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]
        at org.apache.hadoop.hive.ql.exec.tez.TezTask.execute(TezTask.java:184) ~[hive-exec-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]