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Yingjie Cao commented on FLINK-22305: ------------------------------------- After some tests, I find that increasing this default value can impact the out of box user experience of sort-merge blocking shuffle. We decide to only improve the log message. > Increase the default value of taskmanager.network.sort-shuffle.min-buffers > -------------------------------------------------------------------------- > > 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 > 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. -- This message was sent by Atlassian Jira (v8.3.4#803005)