Github user mateiz commented on the pull request: https://github.com/apache/spark/pull/813#issuecomment-44480565 I'd be okay adding this, but it can be a bit of a slippery slope because people may then want it for joins, etc as well. But maybe we can just limit it to cogroup right now. Regarding the pull request though, we should add this API to Python as well. Can you look into what that will take?
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