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Posted to reviews@spark.apache.org by "cloud-fan (via GitHub)" <gi...@apache.org> on 2024/01/31 13:56:33 UTC

Re: [PR] [SPARK-46487][SQL] Push down part of filter through aggregate with nondeterministic field [spark]

cloud-fan commented on PR #44460:
URL: https://github.com/apache/spark/pull/44460#issuecomment-1919151613

   I checked the aggregate execution implementation. Basically, it has an embedded `Project` operator and applies the result projection for aggregated values. That said, I think it has the same property as `Project` and we shouldn't relax the requirement.
   
   On the other hand, the aggregate operator itself is already non-deterministic, as the output row order is different between hash and sort aggregate. But we shouldn't make it worse.


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