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Posted to common-dev@hadoop.apache.org by "Jonathan Barber (JIRA)" <ji...@apache.org> on 2013/04/22 12:29:16 UTC
[jira] [Created] (HADOOP-9491) HOD fails to run under python 2.6.1
Jonathan Barber created HADOOP-9491:
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Summary: HOD fails to run under python 2.6.1
Key: HADOOP-9491
URL: https://issues.apache.org/jira/browse/HADOOP-9491
Project: Hadoop Common
Issue Type: Bug
Components: contrib/hod
Affects Versions: 1.1.2
Environment: RHEL6.4, python-2.6.6-36.el6.x86_64
Reporter: Jonathan Barber
Priority: Critical
Fix For: 1.1.2
Running HOD from the hadoop-1.1.2-bin.tar.gz distribution with python 2.6.6 on RHEL6.4 fails with the output:
$ ./contrib/hod/bin/hod -c contrib/hod/conf/hodrc list -d /tmp/hod-jbarber
/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
Traceback (most recent call last):
File "hod", line 411, in <module>
options=hodOptions)
File "/homes/jbarber/hadoop-1.1.2/contrib/hod/hodlib/Common/setup.py", line 449, in __init__
self.read(configFile)
File "/usr/lib64/python2.6/ConfigParser.py", line 286, in read
self._read(fp, filename)
File "/usr/lib64/python2.6/ConfigParser.py", line 475, in _read
cursect = self._dict()
TypeError: 'dict' object is not callable
This error appears because the Hadoop "config" class is an instance of the python ConfigParser class with a class variable called ._dict. However, the internals of the ConfigParser class appears to have been changed with later versions of python to have a method called ._dict() which now conflicts with the "config" classes usage.
This can be fixed by changing all references in contrib/hod/hodlib/Common/setup.py from ._dict to ._hod_dict, e.g.:
sed -i 's/\._dict/._hod_dict/' contrib/hod/hodlib/Common/setup.py
I tested this change by repeating the hod "list" command successfully.
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