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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Moved] (YARN-264) Inconsistent synchronization in yarn.server.rm.security.DelegationTokenRenewal
Date Sat, 08 Dec 2012 00:01:21 GMT

     [ https://issues.apache.org/jira/browse/YARN-264?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Karthik Kambatla moved MAPREDUCE-4862 to YARN-264:
--------------------------------------------------

          Component/s:     (was: security)
    Affects Version/s:     (was: 1.1.1)
                       2.0.2-alpha
                  Key: YARN-264  (was: MAPREDUCE-4862)
              Project: Hadoop YARN  (was: Hadoop Map/Reduce)
    
> Inconsistent synchronization in yarn.server.rm.security.DelegationTokenRenewal
> ------------------------------------------------------------------------------
>
>                 Key: YARN-264
>                 URL: https://issues.apache.org/jira/browse/YARN-264
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.0.2-alpha
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>
> yarn.s.rm.security.DelegationTokenRenewer uses TimerTask/Timer. When such a timer task
is canceled, already scheduled tasks run to completion. The task should check for such cancellation
before running. Also, delegationTokens needs to be synchronized on all accesses.

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