[HADOOP-9493] Replace popen2 module with subprocess in HOD to eliminate deprecation warning

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 1.1.2
• Component/s: contrib/hod

Environment

RHEL6.4 and Python 2.6.6

• Target Version/s: 1.1.2
• Assignee: Unassigned
• Reporter: Jonathan Barber
• Created: 23/Apr/13 10:29
• Updated: 05/Dec/19 06:48
• Resolved: 05/Dec/19 06:48

Description

Python 2.6.6 issues the following warning when running the "hod" command:
"""
/homes/jbarber/hadoop-1.1.2/contrib/hod/hodlib/Common/threads.py:19: DeprecationWarning: The popen2 module is deprecated. Use the subprocess module.
from popen2 import Popen4, Popen3, MAXFD
"""

The popen2 module was deprecated in Python 2.6.

The attached patch replaces the usage of popen2 with the subprocess module.