Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/17712#discussion_r112622098
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/expressions/UserDefinedFunction.scala
---
@@ -47,12 +47,20 @@ case class UserDefinedFunction protected[sql] (
dataType: DataType,
inputTypes: Option[Seq[DataType]]) {
+ // Optionally used for printing UDF names in EXPLAIN
+ private var nameOption: Option[String] = None
--- End diff --
can we create a new instance instead so this is immutable?
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