cloud-fan commented on issue #25710: [SPARK-29008][SQL] Define an individual method for each common subexpression in HashAggregateExec URL: https://github.com/apache/spark/pull/25710#issuecomment-529919109 LGTM. As usual, can we have a simple microbenchmark to show the advantage? I saw some discussion about the perf numbers but I can't find it in the PR description.
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