[PIG-2762] Command line arguments are not passed to embedded python

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.10.0

Environment

CentOS release 5.6 (Final) Linux 2.6.18-238.5.1.el5 x86_64 with JDK 1.6; both Jython 2.5.0 (version that shipped with the Pig 0.10.0 RC package) and Jython 2.5.2 (standalone build).

• Assignee: Unassigned
• Reporter: Will Duckworth
• Created: 20/Jun/12 12:36
• Updated: 20/Jun/12 17:14

Description

Summary
Using Pig 0.10 and embedded Pig Latin in Python the command line parameters are not passed to python. Attempting to access sys.argv throws "index out of range" from python.

Steps to Reproduce
Create a simple Python script that uses embedded python:

#!/usr/bin/python
 
import sys
from org.apache.pig.scripting import Pig
 
def main():
  print sys.argv[1]

if __name__ == '__main__':
  main()

Run:

$ /path/to/pig pytest.py one_script
2012-06-20 08:19:05,716 [main] INFO  org.apache.pig.Main - Apache Pig version 0.10.0 (r1328203)
[ ... snip ... ]
2012-06-20 08:19:07,204 [main] INFO  org.apache.pig.scripting.jython.JythonScriptEngine - Register scripting UDF: main
2012-06-20 08:19:07,225 [main] ERROR org.apache.pig.Main - ERROR 1121: Python Error. Traceback (most recent call last):
  File "/path/to/pytest.py", line 10, in <module>
    main()
  File "/path/to/pytest.py", line 7, in main
    print sys.argv[1]
IndexError: index out of range: 1

Workaround
Daniel Dai pointed out that the parameters are passed in trunk. I tested and confirmed.

$ /path/to/pig-trunk/bin/pig pytest.py one_script
2012-06-20 08:29:02,041 [main] INFO  org.apache.pig.Main - Apache Pig version 0.11.0-SNAPSHOT (r1351859) compiled Jun 19 2012, 17:30
:54
[ ... snip ... ]
2012-06-20 08:29:10,414 [main] INFO  org.apache.pig.scripting.jython.JythonScriptEngine - Register scripting UDF: main
one_script

Issue Links

• relates to: PIG-2165 Need a way to deal with params and param_file in embedded pig in python
• relates to: PIG-2548 Support for providing parameters to python script