cloud-fan commented on a change in pull request #27488:
[SPARK-26580][SQL][ML][FOLLOW-UP] Throw exception when use untyped UDF by
default
URL: https://github.com/apache/spark/pull/27488#discussion_r376930736
##########
File path: sql/core/src/main/scala/org/apache/spark/sql/functions.scala
##########
@@ -4732,6 +4733,15 @@ object functions {
* @since 2.0.0
*/
def udf(f: AnyRef, dataType: DataType): UserDefinedFunction = {
+ if (!SQLConf.get.getConf(SQLConf.LEGACY_ALLOW_UNTYPED_SCALA_UDF)) {
+ val errorMsg = "You're using untyped udf, which does not have the input
type information. " +
Review comment:
`untyped Scala UDF`
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