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https://issues.apache.org/jira/browse/MAPREDUCE-4894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13538109#comment-13538109
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Daryn Sharp commented on MAPREDUCE-4894:
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I'm not sure if there is a problem canceling JH tokens when the task completes.
Tokens are intended to take the place of kerberos auth within a task. The
token allows the oozie launcher or pig's controlling task to poll for its
sub-job statuses. The external process that launched the job had kerberos auth
to submit the job, so it will have kerberos auth to query the JH server.
> Renewal / cancellation of JobHistory tokens
> -------------------------------------------
>
> Key: MAPREDUCE-4894
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4894
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobhistoryserver, mrv2
> Affects Versions: 0.23.4
> Reporter: Siddharth Seth
> Assignee: Siddharth Seth
> Priority: Blocker
> Attachments: MAPREDUCE-4894_wip.txt, MR-4894.txt
>
>
> Equivalent of YARN-50 for JobHistory tokens.
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