Github user JoshRosen commented on the pull request:
https://github.com/apache/spark/pull/7334#issuecomment-120169614
One question that I have: will the change here introduce a performance
regression in cases where Limit is the final operator in the plan? I think
that we may want to continue to do the `executeTake()` for those cases, which
may require us to use a different physical plan for `Limit` in cases where it's
the terminal operator.
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