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https://issues.apache.org/jira/browse/YARN-3389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jun Gong updated YARN-3389:
---------------------------
    Summary: Avoid race conditions when attempts operate on shared states 
concurrently  (was: Two attempts might operate on same data structures 
concurrently)

> Avoid race conditions when attempts operate on shared states concurrently
> -------------------------------------------------------------------------
>
>                 Key: YARN-3389
>                 URL: https://issues.apache.org/jira/browse/YARN-3389
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Jun Gong
>            Assignee: Jun Gong
>         Attachments: YARN-3389.01.patch
>
>
> In AttemptFailedTransition, the new attempt will get 
> state('justFinishedContainers' and 'finishedContainersSentToAM') reference 
> from the failed attempt. Then the two attempts might operate on these two 
> variables concurrently, e.g. they might update 'justFinishedContainers' 
> concurrently when they are both handling CONTAINER_FINISHED event.



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