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https://issues.apache.org/jira/browse/MAPREDUCE-1464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12830616#action_12830616
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Jitendra Nath Pandey commented on MAPREDUCE-1464:
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In HADOOP-6510 getUser() is used. It cannot return null if the user is
successfully authorized. Any calls to getUser before the authorization is
successful should check for null. Updated the patch in HADOOP-6510 to handle
null returned by getUser before authorization is successful.
> In JobTokenIdentifier change method getUsername to getUser which returns UGI
> ----------------------------------------------------------------------------
>
> Key: MAPREDUCE-1464
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1464
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Reporter: Jitendra Nath Pandey
> Attachments: MR-1464.1.patch
>
>
> The TokenIdentifier interface has changed in HADOOP-6510. This jira tracks
> corresponding change in MR. The only change is that in JobTokenIdentifier
> getUsername method will be changed to getUser that will return ugi.
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