[PIG-2559] Embedded pig in python; invoking sys.exit(0) causes script failure

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.9.1, 0.10.0
• Fix Version/s: 0.10.0, 0.11
• Hadoop Flags: Reviewed
• Assignee: Vivek Padmanabhan
• Reporter: Vivek Padmanabhan
• Created: 27/Feb/12 11:27
• Updated: 26/Apr/12 20:32
• Resolved: 01/Mar/12 22:59

Description

In embedded pig in python, if I have a sys.exit (0) the script always fails and returns exit code as 6.
While it is agreeable that Pig will reinterpret the exit code from Python, sys.exit(0) should be considered as a normal termination.

A sample code;

#!/usr/bin/python
from org.apache.pig.scripting import Pig
import sys
if 1 == 2:
        sys.exit(1)
else:
        sys.exit(0)

Exception from Pig

org.apache.pig.backend.executionengine.ExecException: ERROR 1121: Python Error. Traceback (most recent call last):
  File "a.py", line 9, in <module>
    sys.exit(0)
SystemExit: 0

	at org.apache.pig.scripting.jython.JythonScriptEngine$Interpreter.execfile(JythonScriptEngine.java:107)
	at org.apache.pig.scripting.jython.JythonScriptEngine.load(JythonScriptEngine.java:210)
	at org.apache.pig.scripting.jython.JythonScriptEngine.main(JythonScriptEngine.java:202)
	at org.apache.pig.scripting.ScriptEngine.run(ScriptEngine.java:275)
	at org.apache.pig.Main.runEmbeddedScript(Main.java:925)
	at org.apache.pig.Main.run(Main.java:516)
	at org.apache.pig.Main.main(Main.java:111)
Caused by: Traceback (most recent call last):
  File "a.py", line 9, in <module>
    sys.exit(0)
SystemExit: 0

	at org.python.core.PyException.fillInStackTrace(PyException.java:70)
	at java.lang.Throwable.<init>(Throwable.java:181)
	at java.lang.Exception.<init>(Exception.java:29)
	at java.lang.RuntimeException.<init>(RuntimeException.java:32)
	at org.python.core.PyException.<init>(PyException.java:46)
	at org.python.core.PyException.<init>(PyException.java:43)
	at org.python.core.PySystemState.exit(PySystemState.java:1206)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.python.core.PyReflectedFunction.__call__(PyReflectedFunction.java:175)
	at org.python.core.PyObject.__call__(PyObject.java:355)
	at org.python.core.PyMethod.__call__(PyMethod.java:215)
	at org.python.core.PyMethod.instancemethod___call__(PyMethod.java:221)
	at org.python.core.PyMethod.__call__(PyMethod.java:206)
	at org.python.core.PyObject.__call__(PyObject.java:397)
	at org.python.core.PyObject.__call__(PyObject.java:401)
	at org.python.pycode._pyx0.f$0(a.py:9)
	at org.python.pycode._pyx0.call_function(a.py)
	at org.python.core.PyTableCode.call(PyTableCode.java:165)
	at org.python.core.PyCode.call(PyCode.java:18)
	at org.python.core.Py.runCode(Py.java:1197)
	at org.python.util.PythonInterpreter.execfile(PythonInterpreter.java:166)
	at org.apache.pig.scripting.jython.JythonScriptEngine$Interpreter.execfile(JythonScriptEngine.java:104)
	... 6 more

Issue Links

• is related to: PIG-2558 Embedded pig with python: No way to terminate program gracefully and set OS exit code