ulysses you created SPARK-34919:
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Summary: Change partitioning to SinglePartition if partition
number is 1
Key: SPARK-34919
URL: https://issues.apache.org/jira/browse/SPARK-34919
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.2.0
Reporter: ulysses you
For node `Repartition` and `RepartitionByExpression`, if partition number is 1
we can use `SinglePartition` instead of other `Partitioning`.
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