Github user MickDavies commented on the pull request:
https://github.com/apache/spark/pull/3254#issuecomment-68053039
@jimfcarroll - that's exactly the change I made. Performance improvements
are very substantial for wide tables, as I said in the case I was looking at 6x
as fast, but more significant still if you just consider just processing in
Spark. Thanks for checking in the improvement.
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