Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/2533
I see, keeping the serializers for now makes probably sense.
It just seems that there are also user functions in there (like fold, etc)
- those should probably be removed. May mean that we have to inject them back
into the state descriptor later.
Orthogonal issue, so +1 for this change.
Merging this...
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