XiDuo You created SPARK-37267:
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Summary: OptimizeSkewInRebalancePartitions support optimize
non-root node
Key: SPARK-37267
URL: https://issues.apache.org/jira/browse/SPARK-37267
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 3.3.0
Reporter: XiDuo You
`OptimizeSkewInRebalancePartitions` now is applied if the `RebalancePartitions`
is the root node, but sometimes, we expect a local sort after do
RebalancePartitions that can improve the compression ratio.
After SPARK-36184, we make validate easy that whether the rule introduces extra
shuffle or not and the output partitioning is ensured by
`AQEShuffleReadExec.outputPartitioning`.
So it is safe to make `OptimizeSkewInRebalancePartitions` support optimize
non-root node.
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