Comment 1 for bug 1211915

http://logs.openstack.org/64/41464/4/check/gate-tempest-devstack-vm-neutron/4288a6b/logs/screen-q-svc.txt.gz

Search for the '2013-08-13 17:16:43.835 28151 ERROR neutron.openstack.common.rpc.amqp [-] Exception during message handling' It is very likely happened at the test case time.

The exception printed out later, the scenario test ran at the above time.

'OperationalError: (OperationalError) (1205, 'Lock wait timeout exceeded; try restarting transaction') 'UPDATE agents SET heartbeat_timestamp=%s WHERE agents.id = %s' (datetime.datetime(2013, 8, 13, 17, 15, 52, 725707), 'd6b24090-dfa9-44ee-ac1e-f6b5681e846b')'