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Posted to issues@spark.apache.org by "jiaan.geng (Jira)" <ji...@apache.org> on 2022/03/16 03:23:00 UTC

[jira] [Created] (SPARK-38560) If `Sum`, `Count` with distinct, cannot do partial agg push down.

jiaan.geng created SPARK-38560:
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             Summary: If `Sum`, `Count` with distinct, cannot do partial agg push down.
                 Key: SPARK-38560
                 URL: https://issues.apache.org/jira/browse/SPARK-38560
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.3.0
            Reporter: jiaan.geng


Spark could partial push down sum(distinct col), count(distinct col) if data source have multiple partitions, and Spark will sum the value again.

So the result may not correctly.



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