Github user kiszk commented on a diff in the pull request:
https://github.com/apache/spark/pull/18574#discussion_r126343507
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
---
@@ -112,7 +112,12 @@ class SimpleFunctionRegistry extends FunctionRegistry {
throw new AnalysisException(s"undefined function $name")
}
}
- func(children)
+ try {
+ func(children)
+ } catch {
+ case _: ClassCastException =>
--- End diff --
Can we catch all of `ClassCastException`? I think that only this exception
for ` scala.Function?` is related to wrong number of arguments.
This code may unexpectedly catch `ClassCastException` that occurred in a
function body of given UDF.
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