Github user StefanRRichter commented on the issue:
https://github.com/apache/flink/pull/3508
I think @StephanEwen wanted to keep a simple, intuitive way for users to
register their state that does not require them to think about serializers
etc.. While I understand this point, I am also leaning towards @aljoscha 's
feeling that using this should at least be disencouraged.
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