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https://issues.apache.org/jira/browse/SPARK-53155?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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L. C. Hsieh resolved SPARK-53155.
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Fix Version/s: 4.1.0
4.0.1
3.5.7
Resolution: Fixed
Issue resolved by pull request 51884
[https://github.com/apache/spark/pull/51884]
> Global lower agggregation should not be removed
> -----------------------------------------------
>
> Key: SPARK-53155
> URL: https://issues.apache.org/jira/browse/SPARK-53155
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.2.4, 3.3.4, 3.4.4, 3.5.6, 4.0.0
> Reporter: L. C. Hsieh
> Assignee: L. C. Hsieh
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.1.0, 4.0.1, 3.5.7
>
>
> The optimizer rule RemoveRedundantAggregates removes redundant lower
> aggregation from a query plan and replace it with a project of referred
> non-aggregate expressions. However, if the removed aggregation is a global
> one, that is not correct because a project is different with a global
> aggregation in semantics.
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