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Posted to issues@flink.apache.org by "zhijiang (Jira)" <ji...@apache.org> on 2020/01/10 07:32:00 UTC

[jira] [Closed] (FLINK-15306) Adjust the default netty transport option from nio to auto

     [ https://issues.apache.org/jira/browse/FLINK-15306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

zhijiang closed FLINK-15306.
----------------------------
    Resolution: Fixed

Merged in master: 169edef4b5e4381626b7405947ebfe3f49aff2ac

> Adjust the default netty transport option from nio to auto
> ----------------------------------------------------------
>
>                 Key: FLINK-15306
>                 URL: https://issues.apache.org/jira/browse/FLINK-15306
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Configuration, Runtime / Network
>            Reporter: zhijiang
>            Assignee: zhijiang
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 1.11.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> The default option of `taskmanager.network.netty.transport` in NettyShuffleEnvironmentOptions is `nio` now. As we know, the `epoll` mode can get better performance, less GC and have more advanced features which are only available on linux.
> Therefore it is better to adjust the default option to `auto` instead, and then the framework would automatically choose the proper mode based on the platform.
> We would further verify the performance effect via micro benchmark if possible.



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