Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/17848#discussion_r128159939
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/expressions/UserDefinedFunction.scala
---
@@ -103,4 +110,19 @@ case class UserDefinedFunction protected[sql] (
udf
}
}
+
+ /**
+ * Updates UserDefinedFunction to non-deterministic.
+ *
+ * @since 2.3.0
+ */
+ def nonDeterministic(): UserDefinedFunction = {
--- End diff --
also udf.nondeterministic() doesn't exactly convey the meaning that this is
mutable. I'd change it to
setNondeterministic
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