Github user stanzhai commented on the issue:
https://github.com/apache/spark/pull/19301
@viirya The problem is already obvious, and the same aggregate expression
will be computed multi times. I will provide a benchmark result later.--- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
