Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/3480
Code looks overall very nice!
What would be good is to make the "magic constants" configurable. I don't
expect that anyone usually tweaks those (and eventually they will disappear and
flow control will auto-tune the network), but having them configurable is
always good to have a workaround in case something unexpected happens.
I would follow the same path as the `partitionRequestInitialBackoff` and
`partitionRequestMaxBackoff` values in the `NetworkEnvironment`.
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