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Posted to issues@flink.apache.org by "Yingjie Cao (Jira)" <ji...@apache.org> on 2022/01/26 02:09:00 UTC

[jira] [Closed] (FLINK-21790) Shuffle data directories to make directory selection of different TaskManagers fairer

     [ https://issues.apache.org/jira/browse/FLINK-21790?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yingjie Cao closed FLINK-21790.
-------------------------------
    Resolution: Fixed

> Shuffle data directories to make directory selection of different TaskManagers fairer
> -------------------------------------------------------------------------------------
>
>                 Key: FLINK-21790
>                 URL: https://issues.apache.org/jira/browse/FLINK-21790
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Runtime / Network
>            Reporter: Yingjie Cao
>            Assignee: Yuxin Tan
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 1.15.0
>
>
> Currently, different TaskManagers select data directory in the same order and if there are multiple disk, some disks may stores more data than others which is bad for performance. A simple improvement is that each TaskManager shuffles the given data directories randomly and select the data directory in different order.



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