Naganarasimha G R created YARN-4078:
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Summary: 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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