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https://issues.apache.org/jira/browse/YARN-9958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Akira Ajisaka resolved YARN-9958.
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Fix Version/s: 3.3.0
Hadoop Flags: Reviewed
Resolution: Fixed
Committed to trunk. Thanks [~jiwq] for the contribution and thanks [~Tao Yang]
for the review.
> Remove the invalid lock in ContainerExecutor
> --------------------------------------------
>
> Key: YARN-9958
> URL: https://issues.apache.org/jira/browse/YARN-9958
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Wanqiang Ji
> Assignee: Wanqiang Ji
> Priority: Major
> Fix For: 3.3.0
>
>
> ContainerExecutor has ReadLock and WriteLock. These used to call get/put
> method of ConcurrentMap. Due to the ConcurrentMap providing thread safety and
> atomicity guarantees, so we can remove the lock.
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