srowen closed pull request #23485: [SPARK-26334][SQL] NullPointerException in
CallMethodViaReflection when we apply reflect function for empty field
URL: https://github.com/apache/spark/pull/23485
This is a PR merged from a forked repository.
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the sake of provenance:
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diff --git
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/CallMethodViaReflection.scala
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/CallMethodViaReflection.scala
index 65bb9a8c642b6..64c2a4890e3dd 100644
---
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/CallMethodViaReflection.scala
+++
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/CallMethodViaReflection.scala
@@ -92,7 +92,12 @@ case class CallMethodViaReflection(children: Seq[Expression])
}
i += 1
}
- val ret = method.invoke(null, buffer : _*)
+ var ret: Any = null
+ try{
+ ret = method.invoke(null, buffer : _*)
+ } catch {
+ case _ =>
+ }
UTF8String.fromString(String.valueOf(ret))
}
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