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https://issues.apache.org/jira/browse/YARN-7229?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16174164#comment-16174164
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Yufei Gu commented on YARN-7229:
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Fancy! Like that. Do you plan to contribute it to upstream? [~asuresh]. 

> Add a metric for the size of event queue in AsyncDispatcher
> -----------------------------------------------------------
>
>                 Key: YARN-7229
>                 URL: https://issues.apache.org/jira/browse/YARN-7229
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: metrics, nodemanager, resourcemanager
>    Affects Versions: 3.1.0
>            Reporter: Yufei Gu
>
> The size of event queue in AsyncDispatcher is a good point to monitor daemon 
> performance. Let's make it a RM metric.



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