Github user WeichenXu123 commented on the issue:
https://github.com/apache/spark/pull/19229
@viirya I run the code, you're right, most of time cost on the executedPlan
generation (The old version code). thanks!
But can you append benchmark comparison with `RDD.aggregate` version?
https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/stat/StatFunctions.scala#L102
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