Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/872#issuecomment-116710090
I am confused now, what is it going to be?
1. Overloading, such that it is Scala function and Partitioner, at the
cost of redundant APIs.
2. Only partitioner (sync with batch API)
3. Only Scala function (break with batch API)
I am not a big fan of (1), as these redundant options are confusing
blow-ups of the APIs.
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