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From "Jonathan Eagles (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6598) History server getApplicationReport NPE when fetching report for pre-2.8 job
Date Mon, 15 May 2017 15:27:04 GMT

    [ https://issues.apache.org/jira/browse/YARN-6598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16010699#comment-16010699
] 

Jonathan Eagles commented on YARN-6598:
---------------------------------------

+1. Thanks for verifying this extra compatibility, [~jlowe].

> History server getApplicationReport NPE when fetching report for pre-2.8 job
> ----------------------------------------------------------------------------
>
>                 Key: YARN-6598
>                 URL: https://issues.apache.org/jira/browse/YARN-6598
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: timelineserver
>    Affects Versions: 2.8.0
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Blocker
>         Attachments: YARN-6598.001.patch
>
>
> ApplicationHistoryManagerOnTimelineStore#convertToApplicationReport can NPE for a job
that was run prior to the cluster upgrading to 2.8.  It blindly assumes preemption metrics
are present when CPU metrics are present, and when they are not it triggers the NPE.



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