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Posted to issues@flink.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/05/27 12:54:00 UTC

[jira] [Updated] (FLINK-17970) Increase default value of IO pool executor to 4 * #cores

     [ https://issues.apache.org/jira/browse/FLINK-17970?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-17970:
-----------------------------------
    Labels: pull-request-available  (was: )

> Increase default value of IO pool executor to 4 * #cores
> --------------------------------------------------------
>
>                 Key: FLINK-17970
>                 URL: https://issues.apache.org/jira/browse/FLINK-17970
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>    Affects Versions: 1.11.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.11.0
>
>
> Currently, the default value of {{ClusterOptions.CLUSTER_IO_EXECUTOR_POOL_SIZE}} is #cores. I propose to increase it to 4 * #cores to support a higher load of blocking IO operations. 
> Moreover, I propose to use a cached thread pool instead of a fixed thread pool. That way, only those use cases which have high IO load will actually occupy the required resources to start more threads.
> Last but not least, I propose to change the config option name from {{cluster.io-executor.pool-size}} to {{cluster.io-pool.size}} which is a bit shorter.



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