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https://issues.apache.org/jira/browse/YARN-11401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17649306#comment-17649306
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Prabhu Joseph commented on YARN-11401:
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[~Daniel Ma] This is a duplicate of
[YARN-11251|https://issues.apache.org/jira/browse/YARN-11251].
> Separate AppMaster cleanup events and launcher event into different resource
> pools
> ----------------------------------------------------------------------------------
>
> Key: YARN-11401
> URL: https://issues.apache.org/jira/browse/YARN-11401
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Daniel Ma
> Priority: Major
> Labels: pull-request-available
>
> Currently, there is only one thread pool to handle AM launch and cleanup
> event by ResourceManager,
> In some cases, too many cleanup event will lead to AM launch stuck for a long
> time.
> So in this patch, We divide the shared thread pool into two separated ones to
> handle different event in case that cleanup event flood in blocking launcher
> events being timely handled and vise versa.
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