Github user imatiach-msft commented on the issue:
https://github.com/apache/spark/pull/17123
@crackcell I'm not sure about changing the UDF to be on a row instead of a
column, I've found that the serialization costs are much higher and the spark
code performs much less. Maybe an expert like @cloud-fan can comment more
here? Can you keep the UDF on a column instead of a row?
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