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https://issues.apache.org/jira/browse/YARN-2403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14092615#comment-14092615
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Junping Du commented on YARN-2403:
----------------------------------

The variable of registrationCount should be protected by volatile in concurrent 
environment. Will deliver a quick patch to fix it.

> TestNodeManagerResync fails occasionally in trunk
> -------------------------------------------------
>
>                 Key: YARN-2403
>                 URL: https://issues.apache.org/jira/browse/YARN-2403
>             Project: Hadoop YARN
>          Issue Type: Test
>            Reporter: Ted Yu
>            Priority: Minor
>         Attachments: YARN-2403.patch
>
>
> From  https://builds.apache.org/job/Hadoop-Yarn-trunk/640/ :
> {code}
>   
> TestNodeManagerResync.testKillContainersOnResync:112->testContainerPreservationOnResyncImpl:146
>  expected:<2> but was:<1>
> {code}



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