maropu commented on issue #20965: [SPARK-21870][SQL] Split aggregation code into small functions URL: https://github.com/apache/spark/pull/20965#issuecomment-516349483 I know there are the other valuable approches for this issue (by @viirya and @kiszk) though, we couldn't get a consensus until now. If there is no work to tackle it for the target 3.0, any chance to revive this work now? Yeah, I know this is a band-aid fix, but IMHO it might be worth trying this for 3.0 cuz it seems some users hit this performance issue (they asked me when this issue fixed). WDYT? @cloud-fan @gatorsmile @viirya @rednaxelafx @kiszk @mgaido91
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