TypeError in onefs.Client.revision against mixed-mode cluster

[tucked]

    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

isilon_hadoop_tools/src/isilon_hadoop_tools/onefs.py

Line 1172 in 238bf71

raise MixedModeError(', '.join(revisions))