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Posted to dev@flink.apache.org by "Yingjie Cao (Jira)" <ji...@apache.org> on 2021/03/15 06:38:00 UTC
[jira] [Created] (FLINK-21790) Shuffle data directories to make
data directory section of different TaskManagers fairer
Yingjie Cao created FLINK-21790:
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Summary: Shuffle data directories to make data directory section of different TaskManagers fairer
Key: FLINK-21790
URL: https://issues.apache.org/jira/browse/FLINK-21790
Project: Flink
Issue Type: Improvement
Components: Runtime / Network
Reporter: Yingjie Cao
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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