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https://issues.apache.org/jira/browse/YARN-4647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15123649#comment-15123649
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Karthik Kambatla commented on YARN-4647:
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The checkstyle errors are benign. No unit test since the patch only adds
synchronization.
Checking this in, based on Wangda's +1 earlier.
> RegisterNodeManagerRequestPBImpl needs better locking
> -----------------------------------------------------
>
> Key: YARN-4647
> URL: https://issues.apache.org/jira/browse/YARN-4647
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 2.8.0
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Attachments: yarn-4647.001.patch, yarn-4647.002.patch
>
>
> While working on YARN-4512, I noticed there are potential race conditions in
> RegisterNodeManagerRequestPBImpl. We need to add more locking.
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