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https://issues.apache.org/jira/browse/MAPREDUCE-1516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12857625#action_12857625
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Devaraj Das commented on MAPREDUCE-1516:
----------------------------------------

Sigh .. I wish we hadn't duplicated the methods isAllowedDelegationTokenOp and 
getConnectionAuthenticationMethod in MR and HDFS, and instead defined something 
that would address what the methods provide in Common. Could you please take 
care of this..

> JobTracker should issue a delegation token only for kerberos authenticated 
> client
> ---------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1516
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1516
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>            Reporter: Jitendra Nath Pandey
>            Assignee: Jitendra Nath Pandey
>         Attachments: MR-1516.1.patch, MR-1516.2.patch, MR-1516.3.patch, 
> MR-1516.4.patch, MR-1516.5.patch, MR-1516.6.patch
>
>
> Delegation tokens should be issued only if the client is kerberos 
> authenticated.

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