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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/08/10 14:42:44 UTC

[GitHub] [spark] cloud-fan commented on pull request #28804: [SPARK-31973][SQL] Skip partial aggregates if grouping keys have high cardinality

cloud-fan commented on pull request #28804:
URL: https://github.com/apache/spark/pull/28804#issuecomment-671397804


   Can we have a short description of the approach in the PR description? Seems like we are making hash aggregate adaptive to do pass-through if it can't reduce data size in the first n rows.


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