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https://issues.apache.org/jira/browse/SPARK-34226?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-34226:
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Assignee: (was: Apache Spark)
> Reduce RepartitionOperation num partitions to its child max row
> ---------------------------------------------------------------
>
> Key: SPARK-34226
> URL: https://issues.apache.org/jira/browse/SPARK-34226
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: ulysses you
> Priority: Minor
>
> It's no meaning to repartition data if partition number is larger than data
> row, but would waste the resouce due to redundant task.
> With ETL case, we always inject `repartition` or `distribute by` to reduce
> the output partition but the partition number may bigger than data row. It's
> better that try our best to reduce the redundant partition.
>
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