Github user marmbrus commented on the pull request:
https://github.com/apache/spark/pull/758#issuecomment-42991927
Nice speed up! :)
I looked at the test failure. Looks like [this
TODO](https://github.com/apache/spark/blob/master/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveComparisonTest.scala#L136)
is finally coming back to bite us. Instead of looking for _any_ Sort we
should walk the tree until we find either a Sort or an operation that doesn't
preserve ordering (join , aggregate, etc).
Once we fix that I'd propose merging this right away and then addressing
the other possible suggestions in a followup PR.
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