[HIVE-12797] Synchronization issues with tez/llap session pool in hs2

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.0
• Component/s: HiveServer2
• Target Version/s: 2.0.0
• Assignee: Vikram Dixit K
• Reporter: Vikram Dixit K
• Created: 06/Jan/16 23:01
• Updated: 02/Jun/16 10:17
• Resolved: 26/Jan/16 01:00

Description

The changes introduced as part of HIVE-12674 causes issues while shutting down hs2 when session pools are used.

java.util.ConcurrentModificationException
        at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:966) ~[?:1.8.0_45]
        at java.util.LinkedList$ListItr.remove(LinkedList.java:921) ~[?:1.8.0_45]
        at org.apache.hadoop.hive.ql.exec.tez.TezSessionPoolManager.stop(TezSessionPoolManager.java:288) ~[hive-exec-2.0.0.2.3.5.0-79.jar:2.0.0.2.3.5.0-79]
        at org.apache.hive.service.server.HiveServer2.stop(HiveServer2.java:479) [hive-jdbc-2.0.0.2.3.5.0-79-standalone.jar:2.0.0.2.3.5.0-79]
        at org.apache.hive.service.server.HiveServer2$2.run(HiveServer2.java:183) [hive-jdbc-2.0.0.2.3.5.0-79-standalone.jar:2.0.0.2.3.5.0-79]

Issue Links

• is cloned by: HIVE-12926 Another synchronization issue with tez/llap session pool in hs2