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https://issues.apache.org/jira/browse/SPARK-38162?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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XiDuo You updated SPARK-38162:
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Summary: Optimize one row plan in normal and AQE Optimizer (was: Optimize
one max row plan in normal and AQE Optimizer)
> Optimize one row plan in normal and AQE Optimizer
> -------------------------------------------------
>
> Key: SPARK-38162
> URL: https://issues.apache.org/jira/browse/SPARK-38162
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: XiDuo You
> Priority: Major
>
> Optimize the plan if its max row is equal to or less than 1 in these cases:
> * if sort max rows less than or equal to 1, remove the sort
> * if local sort max rows per partition less than or equal to 1, remove the
> local sort
> * if aggregate max rows less than or equal to 1 and it's grouping only,
> remove the aggregate
> * if aggregate max rows less than or equal to 1, set distinct to false in
> all aggregate expression
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