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https://issues.apache.org/jira/browse/YARN-8995?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16924672#comment-16924672
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Tao Yang commented on YARN-8995:
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Thanks [~jhung] for fixing this problem, sorry for missing changes about logger
class in branch-3.1.
Patch LGTM and already tested in my local environment. Committing shortly.
> Log events info in AsyncDispatcher when event queue size cumulatively reaches
> a certain number every time.
> ----------------------------------------------------------------------------------------------------------
>
> Key: YARN-8995
> URL: https://issues.apache.org/jira/browse/YARN-8995
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: metrics, nodemanager, resourcemanager
> Affects Versions: 3.2.0, 3.3.0
> Reporter: zhuqi
> Assignee: zhuqi
> Priority: Major
> Fix For: 3.3.0, 3.2.1, 3.1.3
>
> Attachments: TestStreamPerf.java,
> YARN-8995-branch-3.1.001.patch.addendum, YARN-8995.001.patch,
> YARN-8995.002.patch, YARN-8995.003.patch, YARN-8995.004.patch,
> YARN-8995.005.patch, YARN-8995.006.patch, YARN-8995.007.patch,
> YARN-8995.008.patch, YARN-8995.009.patch, YARN-8995.010.patch,
> YARN-8995.011.patch, YARN-8995.012.patch, YARN-8995.013.patch,
> YARN-8995.014.patch, YARN-8995.015.patch, YARN-8995.016.patch,
> image-2019-09-04-15-20-02-914.png
>
>
> In our growing cluster，there are unexpected situations that cause some event
> queues to block the performance of the cluster, such as the bug of
> https://issues.apache.org/jira/browse/YARN-5262 . I think it's necessary to
> log the event type of the too big event queue size, and add the information
> to the metrics, and the threshold of queue size is a parametor which can be
> changed.
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