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From "Xuan Gong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-770) NPE NodeStatusUpdaterImpl
Date Tue, 23 Jul 2013 00:14:49 GMT

    [ https://issues.apache.org/jira/browse/YARN-770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13715895#comment-13715895

Xuan Gong commented on YARN-770:

[~stevel@apache.org] Could you provide me more information that I can re-produce this error,
such as which command you are running ?

I do not think this 
            //get next heartbeat interval from response
            nextHeartBeatInterval = response.getNextHeartBeatInterval();
will cause this issue.

Because at ResourceTrackerService, this is how the response will be initiated before it returns
    NodeHeartbeatResponse nodeHeartBeatResponse = YarnServerBuilderUtils
            getResponseId() + 1, NodeAction.NORMAL, null, null, null, null,
</code>. The nextHeartBeatInterval will be set.
> 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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