gatorsmile commented on a change in pull request #27488:
[SPARK-31010][SQL][ML][FOLLOW-UP] Throw exception when use untyped UDF by
default
URL: https://github.com/apache/spark/pull/27488#discussion_r390031663
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
##########
@@ -2016,6 +2016,14 @@ object SQLConf {
.booleanConf
.createWithDefault(false)
+ val LEGACY_ALLOW_UNTYPED_SCALA_UDF =
+ buildConf("spark.sql.legacy.allowUntypedScalaUDF")
+ .internal()
+ .doc("When set to true, user is allowed to use
org.apache.spark.sql.functions." +
+ "udf(f: AnyRef, dataType: DataType). Otherwise, exception will be
throw.")
Review comment:
> exception will be throw
->
> an exception will be thrown at runtime.
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