Github user liancheng commented on the pull request:
https://github.com/apache/spark/pull/166#issuecomment-37939348
Left some comments on minor issues like formatting. LGTM otherwise.
@srowen According to [previous
experiments](https://github.com/apache/incubator-spark/pull/407), this
implementation is indeed better than the original one, +1 for the replacement.
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