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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (YARN-544) Failed resource localization might introduce a race condition.
Date Thu, 11 Apr 2013 22:37:16 GMT

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

Vinod Kumar Vavilapalli resolved YARN-544.
------------------------------------------

    Resolution: Duplicate

Thanks for the update, Omkar.

Closing this as duplicate.
                
> 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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