guihuawen created SPARK-50496:
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Summary: Change partitioning to SinglePartition if partition
number is 1
Key: SPARK-50496
URL: https://issues.apache.org/jira/browse/SPARK-50496
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 4.0.0
Reporter: guihuawen
Fix For: 4.0.0
For node `RebalancePartitions` and `RebalanceByExpression`, if partition number
is 1 we can use `SinglePartition` instead of other `Partitioning`.
h4.
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