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

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

     [ https://issues.apache.org/jira/browse/HIVE-20368?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Teddy Choi reassigned HIVE-20368:
---------------------------------


> 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
>            Priority: Major
>
> 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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