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https://issues.apache.org/jira/browse/SPARK-5369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen updated SPARK-5369:
-----------------------------
    Component/s: YARN

> remove allocatedHostToContainersMap.synchronized in YarnAllocator
> -----------------------------------------------------------------
>
>                 Key: SPARK-5369
>                 URL: https://issues.apache.org/jira/browse/SPARK-5369
>             Project: Spark
>          Issue Type: Bug
>          Components: YARN
>            Reporter: Lianhui Wang
>
> as SPARK-1714 mentioned, because YarnAllocator.allocateResources is a 
> synchronized method, we can remove allocatedHostToContainersMap.synchronized  
> in YarnAllocator.allocateResources.



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