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From "Zhijie Shen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-2770) Timeline delegation tokens need to be automatically renewed by the RM
Date Wed, 29 Oct 2014 17:20:33 GMT
Zhijie Shen created YARN-2770:
---------------------------------

             Summary: 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


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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