Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/22063#discussion_r212393072
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/expressions/UserDefinedFunction.scala
---
@@ -40,7 +40,14 @@ import org.apache.spark.sql.types.DataType
case class UserDefinedFunction protected[sql] (
f: AnyRef,
dataType: DataType,
- inputTypes: Option[Seq[DataType]]) {
+ inputTypes: Option[Seq[DataType]],
+ nullableTypes: Option[Seq[Boolean]] = None) {
+
+ // Constructor from Spark 2.3.0 for binary compatibility
--- End diff --
It was just for MiMa, but I could also suppress the warning
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