Yingjie Cao created FLINK-28377:
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Summary: Enable to request less number of data reading buffers for
sort-shuffle if there is no enough data
Key: FLINK-28377
URL: https://issues.apache.org/jira/browse/FLINK-28377
Project: Flink
Issue Type: Sub-task
Components: Runtime / Network
Reporter: Yingjie Cao
Fix For: 1.16.0
Currently, for sort blocking shuffle, the corresponding data reader always
allocate a fixed size of buffers for shuffle data reading even when there is no
much data to read which will cause buffer waste. We can optimize this to
allocate less number of reading buffers if there is no enough data.
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