Allison Wang created SPARK-32861:
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             Summary: GeneratorExec should require output column ordering
                 Key: SPARK-32861
                 URL: https://issues.apache.org/jira/browse/SPARK-32861
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 3.0.1
            Reporter: Allison Wang


`GeneratorExec` should require column ordering since it binds its input rows 
directly with its `requiredChildOutput` without using the child's output 
schema. In this case, changing input column ordering will result in 
`GenerateExec` binding the wrong schema to the input columns. 



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