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https://issues.apache.org/jira/browse/YARN-4078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14710607#comment-14710607
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Rohith Sharma K S commented on YARN-4078:
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Recently in ApplicationMasterService similar issue got fixed YARN-3986. Could
you please verify anywhere else such issues are exist so that all together can
be combined, discussed and fixed in the same JIRA?
> Unchecked typecast to AbstractYarnScheduler in AppInfo
> ------------------------------------------------------
>
> Key: YARN-4078
> URL: https://issues.apache.org/jira/browse/YARN-4078
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Reporter: Naganarasimha G R
> Assignee: Naganarasimha G R
> Priority: Minor
>
> Currently getPendingResourceRequestForAttempt is present in
> {{AbstractYarnScheduler}}.
> *But in AppInfo, we are calling this method by typecasting it to
> AbstractYarnScheduler, which is incorrect.*
> Because if a custom scheduler is to be added, it will implement
> YarnScheduler, not AbstractYarnScheduler.
> This method should be moved to YarnScheduler or it should have a guarded
> check like in other places (RMAppAttemptBlock.getBlackListedNodes)
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