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https://issues.apache.org/jira/browse/HDFS-949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12853675#action_12853675
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Hudson commented on HDFS-949:
-----------------------------
Integrated in Hdfs-Patch-h2.grid.sp2.yahoo.net #146 (See
[http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h2.grid.sp2.yahoo.net/146/])
> Move Delegation token into Common so that we can use it for MapReduce also
> --------------------------------------------------------------------------
>
> Key: HDFS-949
> URL: https://issues.apache.org/jira/browse/HDFS-949
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: security
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.22.0
>
> Attachments: 6547-949-1470-0_20.1.patch, h-949-common.patch,
> h-949-common.patch, h-949.patch, h-949.patch, h-949.patch
>
>
> We need to support a MapReduce job that launches another MapReduce job inside
> its Mapper. Since the task doesn't have any Kerberos tickets, we need a
> delegation token. Moving the HDFS Delegation token to Common will allow both
> projects to use it.
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