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https://issues.apache.org/jira/browse/YARN-770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13725109#comment-13725109
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Steve Loughran commented on YARN-770:
-------------------------------------
I was just running a test which used a MiniYARN cluster; it showed this NPE in
the stack when running a test case while the network was playing up. I haven't
seen it since that single incident
Is there a codepath that could lead to this NPE-ing condition if some previous
operation failed, with timeout or IOException?
> NPE NodeStatusUpdaterImpl
> -------------------------
>
> Key: YARN-770
> URL: https://issues.apache.org/jira/browse/YARN-770
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 3.0.0
> Reporter: Steve Loughran
> Priority: Minor
>
> A mini yarn cluster based test just failed -NPE in the logs in
> {{NodeStatusUpdaterImpl}}, which is probably a symptom of the problem, not
> the cause -network trouble more likely there- but it shows there's some extra
> checking for null responses.
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