Github user mridulm commented on the pull request:
https://github.com/apache/spark/pull/283#issuecomment-39286182
I have not done a detailed review - but looks pretty expensive in terms of
memory.
Is it making assumptions about lack of skew w.r.t a key and amount of data
per partition (that it can be held entirely in memory) ?
Would be good to document what are the constraints of the solution.
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