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https://issues.apache.org/jira/browse/YARN-9958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16987565#comment-16987565
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Hudson commented on YARN-9958:
------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #17718 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/17718/])
YARN-9958. Remove the invalid lock in ContainerExecutor (#1704) (aajisaka: rev
c48de9aa2ddf7622648c4410612ffc035861df63)
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.java
> 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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