[HOD] local_fqdn() returns None when gethostbyname_ex doesnt return any FQDNs.
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Key: HADOOP-2983
URL: https://issues.apache.org/jira/browse/HADOOP-2983
Project: Hadoop Core
Issue Type: Bug
Components: contrib/hod
Affects Versions: 0.16.0
Environment: Linux, PBS
Reporter: Craig Macdonald
For some reason (probably in our local DNS setup) gethostbyname_ex() does not
return any fully qualified hostnames. This has never been an issue, everything
has worked fully with the hostnames.
However, this causes HOD to fail, as local_fqn() in util.py returns None.
{noformat}
Python 2.5.1 (r251:54863, Sep 21 2007, 16:05:06)
[GCC 3.4.6 20060404 (Red Hat 3.4.6-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import socket, os
>>> socket.gethostbyname_ex(os.uname()[1])
('bohol', [], ['130.209.252.70'])
>>>
{noformat}
The solution is to fix local_fqdn in until.py, such that it falls back to the
contents of the variable me if fqdn is still None.
Ta muchly.
Craig
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