Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/684#issuecomment-105519930
Concerning Marton's comment:
I think we should put the code into a streaming operator library. The
streaming core is undergoing heavy changes, the windowing may be reworked in
the near future, and there are plans to use managed memory for window buffer
contents.
In light of that, I would suggest to keep these changes in a library for
now. It would be easier for both parties that way.
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