Github user pnowojski commented on the issue:
https://github.com/apache/flink/pull/5104
2 times improvement is for network stack only. With other things in play
(like even simple operators) it will be smaller.
As we discussed offline, I didn't want tightening up the
connection/dependencies of `RecordSerializer`. `Buffer` is a much simpler
dependency compare to `BufferProvider`. Think how more difficult would it be to
test it with `BufferProvider`. However I was thinking about refactoring it in
another direction, creating kind of `write-only` `@NotThreadSafe`
`BufferBuilder` class.
I have create a separate issue for that:
https://issues.apache.org/jira/browse/FLINK-8178
---
