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https://issues.apache.org/jira/browse/TEZ-3894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16842776#comment-16842776
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Jonathan Eagles commented on TEZ-3894:
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[~tarekabouzeid91], as this jira is fixed in 0.9.2 (you state you are running a
vender version based on 0.9.1), I would consider upgrading versions of the tez
to 0.9.2. Otherwise, it will be best to get debugging results through the
vendor or through the tez user group ([email protected])
> Tez intermediate outputs implicitly rely on permissive umask for shuffle
> ------------------------------------------------------------------------
>
> Key: TEZ-3894
> URL: https://issues.apache.org/jira/browse/TEZ-3894
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Priority: Major
> Fix For: 0.9.2
>
> Attachments: TEZ-3894.001.patch
>
>
> Tez does not explicitly set the permissions of intermediate output files for
> shuffle. In a secure cluster the shuffle service is running as a different
> user than the task, so the output files require group readability in order to
> serve up the data during the shuffle phase. If the umask is too restrictive
> (e.g.: 077) then the task's file.out and file.out.index permissions can be
> too restrictive to allow the shuffle handler to access them.
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