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https://issues.apache.org/jira/browse/YARN-5375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15435099#comment-15435099
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sandflee commented on YARN-5375:
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thanks [~rohithsharma], even if we using the order rmDispatcher.await -->
stateStoreDispatcher --> rmDispatcher , there are still very very little change
that events are not processed in stateStoreDispatcher or rmDispatcher, agree?
I prefer a accurate way to really drain all events if MockRM#drainEvents
returned. based on this we could use drainEvents to replace sleep-wait way in
MockRM#waitForState, this may help to reduce test time, thought?
> invoke MockRM#drainEvents implicitly in MockRM methods to reduce test failures
> ------------------------------------------------------------------------------
>
> Key: YARN-5375
> URL: https://issues.apache.org/jira/browse/YARN-5375
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: sandflee
> Assignee: sandflee
> Attachments: YARN-5375.01.patch, YARN-5375.03.patch,
> YARN-5375.04.patch, YARN-5375.05.patch, YARN-5375.06.patch
>
>
> seen many test failures related to RMApp/RMAppattempt comes to some state but
> some event are not processed in rm event queue or scheduler event queue,
> cause test failure, seems we could implicitly invokes drainEvents(should also
> drain sheduler event) in some mockRM method like waitForState
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