Github user clockfly commented on a diff in the pull request:
https://github.com/apache/spark/pull/14850#discussion_r77184294
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/ScalaUDF.scala
---
@@ -1057,5 +1059,19 @@ case class ScalaUDF(
private[this] val converter =
CatalystTypeConverters.createToCatalystConverter(dataType)
- override def eval(input: InternalRow): Any = converter(f(input))
+ val npeErrorMessage = "Given UDF throws NPE during execution, please
check the UDF " +
+ "to make sure it handles null parameters correctly."
+
+ override def eval(input: InternalRow): Any = {
+ val result = try {
+ f(input)
+ } catch {
+ case e: NullPointerException =>
--- End diff --
1. For this code branch `eval(input: InternalRow)`, the existing NPE
message should be clear enough if there is a full stacktrace, and the stack
contains method of the UDF.
2. The error message you provided can be totally wrong.
"Given UDF throws NPE during execution, please check the UDF to make sure
it handles null parameters correctly".
What if NPE is not caused by parameter? prompting this message is
misleading.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
