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https://issues.apache.org/jira/browse/FLINK-22305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17324394#comment-17324394
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Yingjie Cao commented on FLINK-22305:
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Merged via 77e0478a7879bd41f9f52872d84c467d158b8098 on master.
> Improve log messages of sort-merge blocking shuffle
> ---------------------------------------------------
>
> Key: FLINK-22305
> URL: https://issues.apache.org/jira/browse/FLINK-22305
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Network
> Reporter: Yingjie Cao
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.13.0
>
>
> Currently, the default value of taskmanager.network.sort-shuffle.min-buffers
> is 64, which is pretty small. As suggested, we'd like to increase the default
> value of taskmanager.network.sort-shuffle.min-buffers. By increasing the
> default taskmanager.network.sort-shuffle.min-buffers, the corner case of very
> small in-memory sort-buffer and write-buffer can be avoid, which is better
> for performance.
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