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https://issues.apache.org/jira/browse/MAPREDUCE-3904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13216073#comment-13216073
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Jonathan Eagles commented on MAPREDUCE-3904:
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Thanks for taking a look Tom.
> [NPE] Job history produced with mapreduce.cluster.acls.enabled false can not
> be viewed with mapreduce.cluster.acls.enabled true
> -------------------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-3904
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3904
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.1
> Reporter: Jonathan Eagles
> Assignee: Jonathan Eagles
> Fix For: 0.23.2
>
> Attachments: MAPREDUCE-3904.patch, MAPREDUCE-3904.patch
>
>
> Job history page displays 'null'. It looks like job history files only
> populate job acls when mapreduce.cluster.acls.enabled is true. Upon reading
> job history files, getAcls can return null, throwing an exception on the
> HsJobBlock page.
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