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https://issues.apache.org/jira/browse/FLINK-13184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Till Rohrmann updated FLINK-13184:
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Issue Type: Improvement (was: Bug)
> Support launching task executors with multi-thread on YARN.
> -----------------------------------------------------------
>
> Key: FLINK-13184
> URL: https://issues.apache.org/jira/browse/FLINK-13184
> Project: Flink
> Issue Type: Improvement
> Components: Deployment / YARN
> Affects Versions: 1.8.1, 1.9.0
> Reporter: Xintong Song
> Assignee: Xintong Song
> Priority: Major
>
> Currently, YarnResourceManager starts all task executors in main thread. This
> could cause RM thread becomes unresponsive when launching a large number of
> TEs (e.g. > 1000), leading to TE registration/heartbeat timeouts.
>
> In Blink, we have a thread pool that RM starts TEs through the YARN NMClient
> in separated threads. I think we should add this feature to the Flink master
> branch as well.
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