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https://issues.apache.org/jira/browse/YARN-875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13710136#comment-13710136
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Bikas Saha commented on YARN-875:
---------------------------------

We should not ignore any exceptions unless there is a good reason to do so. It 
leads unpredictable behavior on the application.
                
> Application can hang if AMRMClientAsync callback thread has exception
> ---------------------------------------------------------------------
>
>                 Key: YARN-875
>                 URL: https://issues.apache.org/jira/browse/YARN-875
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.1.0-beta
>            Reporter: Bikas Saha
>            Assignee: Xuan Gong
>         Attachments: YARN-875.1.patch, YARN-875.1.patch, YARN-875.2.patch
>
>
> Currently that thread will die and then never callback. App can hang. 
> Possible solution could be to catch Throwable in the callback and then call 
> client.onError().

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