Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/22501
thank you guys for refreshing the benchmarks and results! It's very helpful.
If possible, can we post the perf regressions we found in the umbrella
JIRA? Then people can see if the perf regression is reasonable(if we have
addressed it) or investigate how the regression was introduced.
Thanks!
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