Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22063#discussion_r212499164
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/ScalaUDF.scala
---
@@ -57,8 +59,21 @@ case class ScalaUDF(
children: Seq[Expression],
inputTypes: Seq[DataType],
udfName: Option[String]) = {
- this(
- function, dataType, children, inputTypes, udfName, nullable = true,
udfDeterministic = true)
+ this(function, dataType, children, inputTypes, udfName,
+ nullable = true, udfDeterministic = true, nullableTypes = Nil)
+ }
+
+ // Constructor from Spark 2.3
--- End diff --
By convention, everything under catalyst package is private, so
compatibility is not a concern here.
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