Github user jkbradley commented on the pull request:
https://github.com/apache/spark/pull/2708#issuecomment-58464384
@chouqin Thanks for the updates! LGTM. I ran some timing tests and saw
consistent speedups, but the speedups were not as big as I would have expected.
(It was about 1.1X or 1.2X faster, but I would hope for close to 2X faster.)
@mengxr If it looks ready to you, I think this is ready to merge. In the
meantime, I am running some larger timing tests to see if I can get better
speedups.
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