OpenStack Devstack Matchmaker unregistered: ceilometer.ubuntu, ubuntu

1)
Getting error from following services
ceilometer-acompute
ceilometer-acentral
ceilometer-collector
ceilometer-alarm-notifier

---- Error ----

2014-05-30 19:38:35.623 12035 TRACE ceilometer.openstack.common.threadgroup     return execute(conn, stack, raise_on_error)
2014-05-30 19:38:35.623 12035 TRACE ceilometer.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/redis-2.9.1-py2.7.egg/redis/client.py", line 2070, in _execute_transaction
2014-05-30 19:38:35.623 12035 TRACE ceilometer.openstack.common.threadgroup     self.raise_first_error(commands, response)
2014-05-30 19:38:35.623 12035 TRACE ceilometer.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/redis-2.9.1-py2.7.egg/redis/client.py", line 2106, in raise_first_error
2014-05-30 19:38:35.623 12035 TRACE ceilometer.openstack.common.threadgroup     raise r
2014-05-30 19:38:35.623 12035 TRACE ceilometer.openstack.common.threadgroup ResponseError: Command # 1 (SADD ceilometer.agent.compute.ubuntu ceilometer.agent.compute.ubuntu.ubuntu) of pipeline caused error: Operation against a key holding the wrong kind of value
2014-05-30 19:38:35.623 12035 TRACE ceilometer.openstack.common.threadgroup
2014-05-30 19:38:35.629 12035 INFO ceilometer.openstack.common.rpc.matchmaker [-] Matchmaker unregistered: ceilometer.ubuntu, ubuntu

Fix
====
http://fosshelp.blogspot.com/2014/05/openstack-devstack-responseerror.html