[PIG-2322] varargs functions do not get passed the arguments in Python embedding

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.11
• Patch Info: Patch Available
• Assignee: Julien Le Dem
• Reporter: Julien Le Dem
• Created: 17/Oct/11 19:52
• Updated: 22/Feb/13 04:53
• Resolved: 16/Feb/12 18:19

Description

from Stan:

Hi,

I have a simple python udf which takes a variable number of (string)
arguments and returns the first non-empty one.
I can see that the udf is invoked from pig but no arguments are being passed.

Here is the script:
=========================================================

#!/usr/bin/python

from org.apache.pig.scripting import *

@outputSchema("s:chararray")
def firstNonempty(*args):
print args
for v in args:
if len(v) != 0:
return v
return ''

if _name_ == "_main_":
Pig.compile("""
data = load 'input.txt' AS (string1:chararray, string2:chararray);
data = foreach data generate firstNonempty(string1, string2) as id,
string1, string2;
dump data;
""").bind().runSingle()

===========================================================

Thanks!