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https://issues.apache.org/jira/browse/FLINK-21790?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yingjie Cao updated FLINK-21790:
--------------------------------
Parent: (was: FLINK-19614)
Issue Type: Bug (was: Sub-task)
> 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: Bug
> Components: Runtime / Network
> Reporter: Yingjie Cao
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.13.0
>
>
> 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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