srowen commented on issue #23485: [SPARK-26334][SQL] NullPointerException in CallMethodViaReflection when we apply reflect function for empty field URL: https://github.com/apache/spark/pull/23485#issuecomment-452065422 @southernriver you have opened this vs branch 2.3, and I also don't see that we should change this behavior. You're invoking a method that can't accept null, so this is the expected behavior. You can handle nulls otherwise in your code. It's not really expected to return the string "null" in this case.
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