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Posted to issues@flink.apache.org by "Till Rohrmann (JIRA)" <ji...@apache.org> on 2019/07/11 08:39:00 UTC

[jira] [Updated] (FLINK-13184) Support launching task executors with multi-thread on YARN.

     [ https://issues.apache.org/jira/browse/FLINK-13184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann updated FLINK-13184:
----------------------------------
    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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