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https://issues.apache.org/jira/browse/YARN-6603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16012435#comment-16012435
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Daryn Sharp commented on YARN-6603:
-----------------------------------
+1 I think no test is fine due to difficulty of forcing the race condition and
the patch essentially amounts to a null check. Failed tests appear unrelated.
> NPE in RMAppsBlock
> ------------------
>
> Key: YARN-6603
> URL: https://issues.apache.org/jira/browse/YARN-6603
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 2.8.0
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Attachments: YARN-6603.001.patch, YARN-6603.002.patch
>
>
> We are seeing an intermittent NPE when the RM is trying to render the
> /cluster URI.
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