Nico Kruber created FLINK-7428:
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Summary: avoid one additional buffer copy when receiving messages
Key: FLINK-7428
URL: https://issues.apache.org/jira/browse/FLINK-7428
Project: Flink
Issue Type: Improvement
Components: Network
Affects Versions: 1.4.0
Reporter: Nico Kruber
Assignee: Nico Kruber
By using {{LengthFieldBasedFrameDecoder}}, we create one unnecessary (netty)
buffer copy in this class which could be easily avoided since we can ensure
that the buffer is free to be released after decoding it in the
{{NettyMessageDecoder}} and into our own buffer and/or events.
The solution would be to make {{NettyMessageDecoder}} extend from
{{LengthFieldBasedFrameDecoder}} and handle the decoding of the frames and the
objects in there. In the frame creation otherwise done by
{{LengthFieldBasedFrameDecoder}}, we could use a sliced buffer instead. This
solution also makes the channel pipelines a bit simpler.
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