Github user viirya commented on the issue:
https://github.com/apache/spark/pull/18931
@maropu Thanks for running the benchmark and getting the numbers!
So looks like SPARK-21603 actually affect the performance improvement of
this PR?
It shows this PR can significantly improve long codegen queries like Q17
and Q66.
And SPARK-21603 with default setting downgrades many queries including Q66.
cc @cloud-fan @gatorsmile @kiszk
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