def revision(self):
"""Get the revision number of the cluster."""
revisions = set(self.revisions().values())
if len(revisions) != 1:
> raise MixedModeError(', '.join(revisions))
E TypeError: sequence item 0: expected string or Unicode, int found
/usr/local/lib/python2.7/site-packages/isilon_hadoop_tools/onefs.py:1108: TypeError
https://github.com/Isilon/isilon_hadoop_tools/blob/238bf718e6eb439a49aca8d8d5ae29df95b176a6/src/isilon_hadoop_tools/onefs.py#L1172