Github user jkbradley commented on the pull request:
https://github.com/apache/spark/pull/2780#issuecomment-59661579
@chouqin Thanks for the updates! The updates look good.
One more small comment: Could you please add explicit checks in the unit
tests to make sure the returned splits are distinct? I should have thought of
that earlier.
I'll try some timing tests to make sure the sampling does not take too long.
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