Github user maryannxue commented on a diff in the pull request:
https://github.com/apache/spark/pull/22732#discussion_r226521257
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/ScalaReflection.scala
---
@@ -932,6 +935,23 @@ trait ScalaReflection {
tpe.dealias.erasure.typeSymbol.asClass.fullName
}
+ /**
+ * Returns the nullability of the input parameter types of the scala
function object.
+ *
+ * Note that this only works with Scala 2.11, and the information
returned may be inaccurate if
+ * used with a different Scala version.
--- End diff --
I think it simply returns if going through the below code path. I should
probably make the java doc clearer.
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