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https://issues.apache.org/jira/browse/YARN-2919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14247257#comment-14247257
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Karthik Kambatla commented on YARN-2919:
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I think we want to add the "canceling" state to {{Token}} itself, and update
the renew code to reject renew requests when "canceling" is true.
> Potential race between renew and cancel in DelegationTokenRenwer
> -----------------------------------------------------------------
>
> Key: YARN-2919
> URL: https://issues.apache.org/jira/browse/YARN-2919
> Project: Hadoop YARN
> Issue Type: Bug
> Components: security
> Affects Versions: 2.6.0
> Reporter: Karthik Kambatla
> Assignee: Naganarasimha G R
> Priority: Critical
> Attachments: YARN-2919.20141209-1.patch
>
>
> YARN-2874 fixes a deadlock in DelegationTokenRenewer, but there is still a
> race because of which a renewal in flight isn't interrupted by a cancel.
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