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https://issues.apache.org/jira/browse/MAPREDUCE-6405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14590324#comment-14590324
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Siqi Li commented on MAPREDUCE-6405:
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Looks like the problem stems from the fact that AttemptsPage extends TaskPage,
and the ability of killing attempt is designed for TaskPage only.
> NullPointerException in App Attempts page
> -----------------------------------------
>
> Key: MAPREDUCE-6405
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6405
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.8.0
> Reporter: Siqi Li
> Assignee: Siqi Li
> Attachments: MAPREDUCE-6405.v1.patch
>
>
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