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Posted to yarn-issues@hadoop.apache.org by "Vinod Kumar Vavilapalli (JIRA)" <ji...@apache.org> on 2013/04/05 01:24:15 UTC

[jira] [Updated] (YARN-544) Failed resource localization might introduce a race condition.

     [ https://issues.apache.org/jira/browse/YARN-544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vinod Kumar Vavilapalli updated YARN-544:
-----------------------------------------

    Issue Type: Sub-task  (was: Bug)
        Parent: YARN-543
    
> Failed resource localization might introduce a race condition.
> --------------------------------------------------------------
>
>                 Key: YARN-544
>                 URL: https://issues.apache.org/jira/browse/YARN-544
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Omkar Vinit Joshi
>            Assignee: Omkar Vinit Joshi
>
> When resource localization fails [Public localizer / LocalizerRunner(Private)] it sends ContainerResourceFailedEvent to the containers which then sends ResourceReleaseEvent to the failed resource. In the end when LocalizedResource's ref count drops to 0 its state is changed from DOWNLOADING to INIT.
> Now if a Resource gets ResourceRequestEvent in between ContainerResourceFailedEvent and last ResourceReleaseEvent then for that resource ref count will not drop to 0 and the container which sent the ResourceRequestEvent will keep waiting.

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