-python UDF that returns None
Doug Daniels 2011-09-29, 22:56
I'm writing a python UDF that returns a tuple with three fields. I'm wondering if it's ok to return None if for some reason I can't build the tuple, but don't want to throw an Exception and stop processing.
For example, on a much-simplified version of the UDF:
@outputSchema('t:tuple(a:int, b:int, c:int)')
if input < 5:
return (1, 2, 3)
Should I be returning None or (None, None, None). Also, will there be any type issues if I return None back instead of a int?