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Posted to yarn-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2012/12/12 23:49:21 UTC

[jira] [Updated] (YARN-264) y.s.rm.DelegationTokenRenewer attempts to renew token even after removing an app

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

Karthik Kambatla updated YARN-264:
----------------------------------

    Summary: y.s.rm.DelegationTokenRenewer attempts to renew token even after removing an app  (was: Inconsistent synchronization in yarn.server.rm.security.DelegationTokenRenewal)
    
> y.s.rm.DelegationTokenRenewer attempts to renew token even after removing an app
> --------------------------------------------------------------------------------
>
>                 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
>         Attachments: yarn-264.patch, yarn-264.patch, yarn-264.patch
>
>
> 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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