Github user henrify commented on the issue:
https://github.com/apache/spark/pull/19943
@dongjoon-hyun Thank you for testing the split methods. If anything the
benchmark results look couple of percent slower now? Oh well, at least it is
good to know that your code is as fast as it can be!
I have no further ideas how performance could possibly be improved. Just
many thanks to you and all reviewers for your hard work on this PR!
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