Github user rdblue commented on the pull request:
https://github.com/apache/spark/pull/13280#issuecomment-221375636
@rxin, I agree that we shouldn't upgrade if there are perf regressions. I
would like to know what they are so we can fix them in Parquet upstream though.
This should be a big performance improvement for selective queries on sorted
data because we can't currently push down any string predicates. It seems like
a good thing to pair with the new {{DataFrameWriter#sortBy}} feature.
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