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Posted to dev@hive.apache.org by "Teddy Choi (JIRA)" <ji...@apache.org> on 2018/08/11 14:16:00 UTC

[jira] [Created] (HIVE-20368) Remove VectorTopNKeyOperator lock

Teddy Choi created HIVE-20368:
---------------------------------

             Summary: Remove VectorTopNKeyOperator lock
                 Key: HIVE-20368
                 URL: https://issues.apache.org/jira/browse/HIVE-20368
             Project: Hive
          Issue Type: Bug
            Reporter: Teddy Choi
            Assignee: Teddy Choi


VectorTopNKeyOperator has a lock in line 199 as following.
{code:java}
priorityQueue.offer(WritableUtils.clone(keysWritable, getConfiguration()));
{code}
WritableUtils.clone calls Confgiruation.getClassByNameOrNull that has synchronized block. So it needs to run without locks.



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