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https://issues.apache.org/jira/browse/HDFS-949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12831344#action_12831344
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Owen O'Malley commented on HDFS-949:
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The hdfs tests pass and findbugs came back clean after we removed the shadowing
by renaming the Common classes to AbstractDelegation...
> 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
> Attachments: 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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