linhongliu-db opened a new pull request #32587:
URL: https://github.com/apache/spark/pull/32587


   ### What changes were proposed in this pull request?
   Add the language, such as "scala", "python", "java", "hive", "built-in" to 
the `ExpressionInfo` for UDF.
   
   ### Why are the changes needed?
   Make the `ExpressionInfo` of UDF more meaningful
   
   
   ### Does this PR introduce _any_ user-facing change?
   no
   
   
   ### How was this patch tested?
   existing and newly added UT
   


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