celery/celery — pull request #1252 by jbiel (2013-03-20 22:35:58+00:00)
Title: Cassandra backend - catch pycassa.AllServersUnavailable exception

Catch the pycassa.AllServersUnavailable exception so the request is
retried. Without this the parent celery process freezes if this
exception is thrown. Fixes issue #1010.