Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/2436
I am not sure I agree with this change.
There are cases when another class logically belongs to the RPC endpoint
(such as a connection utility). Being able to access the RPC execution context
allows one to treat both together as a "one operation at a time" unit. I think
that is pretty useful.
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