[jira] [Created] (HIVE-12797) Synchronization issues with tez/llap session pool in hs2

["Vikram Dixit K (JIRA)" <ji...@apache.org>]

Vikram Dixit K created HIVE-12797:
-------------------------------------

             Summary: Synchronization issues with tez/llap session pool in hs2
                 Key: HIVE-12797
                 URL: https://issues.apache.org/jira/browse/HIVE-12797
             Project: Hive
          Issue Type: Bug
          Components: HiveServer2
    Affects Versions: 2.0.0
            Reporter: Vikram Dixit K
            Assignee: Vikram Dixit K


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

{code}
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]
{code}



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