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Jiayi Liao commented on FLINK-16012: ------------------------------------ [~kevin.cyj] Which result is tested before the change? And which is after? > Reduce the default number of exclusive buffers from 2 to 1 on receiver side > --------------------------------------------------------------------------- > > Key: FLINK-16012 > URL: https://issues.apache.org/jira/browse/FLINK-16012 > Project: Flink > Issue Type: Improvement > Reporter: Zhijiang > Assignee: Yingjie Cao > Priority: Major > Labels: pull-request-available > Fix For: 1.11.0 > > Attachments: image-2020-02-13-21-54-05-026.png, > image-2020-02-13-23-30-17-951.png, image-2020-02-14-07-23-16-171.png, > image-2020-02-14-09-13-07-967.png > > Time Spent: 10m > Remaining Estimate: 0h > > In order to reduce the inflight buffers for checkpoint in the case of back > pressure, we can reduce the number of exclusive buffers for remote input > channel from default 2 to 1 as the first step. Besides that, the total > required buffers are also reduced as a result. We can further verify the > performance effect via various of benchmarks. -- This message was sent by Atlassian Jira (v8.3.4#803005)