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https://issues.apache.org/jira/browse/FLINK-22307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17324396#comment-17324396
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Yingjie Cao commented on FLINK-22307:
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Merged via d29357791315ace0218308f9f96bf65c7c8079d7 on master.
> Increase the default value of data writing cache size (not configurable) for
> sort-merge blocking shuffle
> --------------------------------------------------------------------------------------------------------
>
> Key: FLINK-22307
> URL: https://issues.apache.org/jira/browse/FLINK-22307
> 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 data writing cache is 8M, which is not enough if data
> compression is enabled. By increasing the cache size to 16M, the performance
> of our benchmark job can be increased by about 20%. (We may make it
> configurable in the future)
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