XiDuo You created SPARK-38773:
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Summary: Correct the Union output partitioning and ordering
Key: SPARK-38773
URL: https://issues.apache.org/jira/browse/SPARK-38773
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.4.0
Reporter: XiDuo You
If the output partitioning of all children are semantics equality, the Union
should respect their output partitioning.
Else if the outout ordering of all children are semantics equality, the Union
should respect their output ordering.
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