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https://issues.apache.org/jira/browse/YARN-2110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14011788#comment-14011788
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Chen He commented on YARN-2110:
-------------------------------

change casting from CapacityScheduler to AbstractYarnScheduler which is the 
parent of both FairScheduler and CapacityScheduler.

> TestAMRestart#testAMRestartWithExistingContainers assumes CapacityScheduler
> ---------------------------------------------------------------------------
>
>                 Key: YARN-2110
>                 URL: https://issues.apache.org/jira/browse/YARN-2110
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Anubhav Dhoot
>            Assignee: Chen He
>         Attachments: YARN-2110.patch
>
>
> The TestAMRestart#testAMRestartWithExistingContainers does a cast to 
> CapacityScheduler in a couple of places
> {code}
> ((CapacityScheduler) rm1.getResourceScheduler())
> {code}
> If run with FairScheduler as default scheduler the test throws 
> {code} java.lang.ClassCastException {code}.



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