title: Problems getting stress.py to work with Cassandra
body: <p>I am trying to run the stress.py stress test included with Cassandra. When I attempt to run ./stress.py I get the following output:</p>
  
  <pre><code>Traceback (most recent call last):
    File "/usr/lib/python2.6/multiprocessing/process.py", line 232, in _bootstrap
      self.run()
    File "./stress.py", line 238, in run
      self.cclient.batch_mutate(cfmap, consistency)
    File "/opt/cassandra/apache-cassandra-0.7.6-2-src/contrib/py_stress/cassandra/Cassandra.py", line 784, in batch_mutate
      self.recv_batch_mutate()
    File "/opt/cassandra/apache-cassandra-0.7.6-2-src/contrib/py_stress/cassandra/Cassandra.py", line 808, in recv_batch_mutate
      raise result.ue
  UnavailableException: UnavailableException()
  Process Inserter-49:
  </code></pre>
  
  <p>Any thoughts? Thanks</p>