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Posted to dev@flink.apache.org by "Yingjie Cao (Jira)" <ji...@apache.org> on 2021/04/16 09:23:00 UTC

[jira] [Created] (FLINK-22307) Increase the data writing cache size of sort-merge blocking shuffle

Yingjie Cao created FLINK-22307:
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             Summary: Increase the data writing cache size of 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
             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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