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https://issues.apache.org/jira/browse/YARN-4126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14735170#comment-14735170
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Jian He commented on YARN-4126:
-------------------------------

Yes, there is. For example, oozie grabs this token in insecure mode and pass 
the token around in insecure mode which actually breaks in some places.

> RM should not issue delegation tokens in unsecure mode
> ------------------------------------------------------
>
>                 Key: YARN-4126
>                 URL: https://issues.apache.org/jira/browse/YARN-4126
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jian He
>            Assignee: Bibin A Chundatt
>         Attachments: 0001-YARN-4126.patch, 0002-YARN-4126.patch
>
>
> ClientRMService#getDelegationToken is currently  returning a delegation token 
> in insecure mode. We should not return the token if it's in insecure mode. 



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