Yingjie Cao created FLINK-29351:
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Summary: Enable input buffer floating for blocking shuffle
Key: FLINK-29351
URL: https://issues.apache.org/jira/browse/FLINK-29351
Project: Flink
Issue Type: Improvement
Components: Runtime / Network
Reporter: Yingjie Cao
Fix For: 1.17.0
At input gate, Flink needs exclusive buffers for each input channel. For large
parallelism jobs, it is easy to cause "Insufficient number of network buffers"
error. This ticket aims to make all input network buffers floating for blocking
shuffle to reduce the possibility of "Insufficient number of network buffers"
error. This change can also improve the default blocking shuffle performance
because buffer floating can increase the buffer utilization.
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