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https://issues.apache.org/jira/browse/YARN-2770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14191308#comment-14191308
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Zhijie Shen commented on YARN-2770:
-----------------------------------
The two test failures are not related, and happen on other Jiras, too: file two
tickets for them - YARN-2782 an YARN-2783.
> Timeline delegation tokens need to be automatically renewed by the RM
> ---------------------------------------------------------------------
>
> Key: YARN-2770
> URL: https://issues.apache.org/jira/browse/YARN-2770
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Affects Versions: 2.5.0
> Reporter: Zhijie Shen
> Assignee: Zhijie Shen
> Priority: Critical
> Attachments: YARN-2770.1.patch, YARN-2770.2.patch
>
>
> YarnClient will automatically grab a timeline DT for the application and pass
> it to the app AM. Now the timeline DT renew is still dummy. If an app is
> running for more than 24h (default DT expiry time), the app AM is no longer
> able to use the expired DT to communicate with the timeline server. Since RM
> will cache the credentials of each app, and renew the DTs for the running
> app. We should provider renew hooks similar to what HDFS DT has for RM, and
> set RM user as the renewer when grabbing the timeline DT.
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