XiDuo You created SPARK-37949:
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Summary: 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
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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