zhijiang created FLINK-15963:
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Summary: Reuse the same ByteBuf while writing the BufferResponse
header
Key: FLINK-15963
URL: https://issues.apache.org/jira/browse/FLINK-15963
Project: Flink
Issue Type: Improvement
Components: Runtime / Network
Reporter: zhijiang
On sender side while writing the BufferResponse message, it always allocates
the new direct ByteBuf from netty allocator to write header part for every
message.
Considering only one message is written in one channel at the same time, then
we can make use of a fixed ByteBuf to write header part for all the
BufferResponse messages. We can verify how it effects the performance in
practice/benchmark.
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