Github user zhijiangW commented on the issue:
https://github.com/apache/flink/pull/4533
@pnowojski , thanks for your reviews!
I should explain the context beforehand.
We present the separate `CreditBasedClientHandler` in order not to affect
the current logic in master branch when partial PRs merged. Actually it would
replace the current `PartitionRequestClientHandler` after all this feature
codes merged.
Different from previous
[FLINK-7406](https://github.com/apache/flink/pull/4509) which is related with
ingoing pipeline logic, and this PR is for outgoing pipeline logic.
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