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https://issues.apache.org/jira/browse/SPARK-37949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-37949:
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Assignee: Apache Spark
> Improve Rebalance statistics estimation
> ---------------------------------------
>
> Key: SPARK-37949
> URL: https://issues.apache.org/jira/browse/SPARK-37949
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: XiDuo You
> Assignee: Apache Spark
> Priority: Major
>
> The defualt statistics estimation only consider the size in bytes, which may
> lost the row rount and columns statistics.
> The `RebalancePartitions` actually does not change the statistics of plan, so
> we can use the statistics of its child for more accurate.
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