Github user kanzhang commented on the pull request: https://github.com/apache/spark/pull/841#issuecomment-43673656 @marmbrus I tried to implement the formula you gave on the mailing list. Not sure if I missed anything. Pls take a look. Note I changed Count() to return Long to match RDD.count(). On the python side, the original rdd.count() returns Int.
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