Github user manishamde commented on the pull request:
https://github.com/apache/spark/pull/475#issuecomment-42270061
@mengxr Sorry for troubling you. If you have time, could you take another
look and provide feedback (if any). A few more tree-based PRs are in the
pipeline and it's best if we can review them in a piecemeal fashion rather than
in parallel. :-)
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