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https://issues.apache.org/jira/browse/YARN-7508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16256506#comment-16256506
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Bibin A Chundatt commented on YARN-7508:
----------------------------------------

Thank you [~Tao Yang] for confirming the same.
I plan to commit this patch by end of tomorrow if no objections.

> NPE in FiCaSchedulerApp when debug log enabled and try to commit outdated 
> reserved proposal in async-scheduling mode
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-7508
>                 URL: https://issues.apache.org/jira/browse/YARN-7508
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 2.9.0, 3.0.0-alpha4
>            Reporter: Tao Yang
>            Assignee: Tao Yang
>         Attachments: YARN-7508.001.patch
>
>
> YARN-6678 have fixed the IllegalStateException problem but the debug log it 
> added may cause NPE when trying to print containerId of non-existed reserved 
> container on this node. Replace 
> {{schedulerContainer.getSchedulerNode().getReservedContainer().getContainerId()}}
>  with {{schedulerContainer.getSchedulerNode().getReservedContainer()}} can 
> fix this problem.



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