These can be seen all over the unit test logs. At least some of them are caused by tests failing to mock calls to conductor api method build_instances(), which is spawning new threads to handle such builds. The timeouts happen when calls to scheduler gets no reply within the configured rpc timeout of 60 secs.
This is not actually causing any test failures but makes debugging harder since errors show up randomly in logs.
A typical error looks like this:
Traceback (most recent call last):
File "nova/conductor/manager.py", line 614, in build_instances
request_spec, filter_properties)
File "nova/scheduler/client/__init__.py", line 49, in select_destinations
context, request_spec, filter_properties)
File "nova/scheduler/client/__init__.py", line 35, in __run_method
return getattr(self.instance, __name)(*args, **kwargs)
File "nova/scheduler/client/query.py", line 34, in select_destinations
context, request_spec, filter_properties)
File "nova/scheduler/rpcapi.py", line 107, in select_destinations
request_spec=request_spec, filter_properties=filter_properties)
File "/home/jenkins/workspace/gate-nova-python27/.tox/py27/local/lib/python2.7/site-packages/oslo/messaging/rpc/client.py", line 152, in call
retry=self.retry)
File "/home/jenkins/workspace/gate-nova-python27/.tox/py27/local/lib/python2.7/site-packages/oslo/messaging/transport.py", line 90, in _send
timeout=timeout, retry=retry)
File "/home/jenkins/workspace/gate-nova-python27/.tox/py27/local/lib/python2.7/site-packages/oslo/messaging/_drivers/impl_fake.py", line 194, in send
return self._send(target, ctxt, message, wait_for_reply, timeout)
File "/home/jenkins/workspace/gate-nova-python27/.tox/py27/local/lib/python2.7/site-packages/oslo/messaging/_drivers/impl_fake.py", line 186, in _send
'No reply on topic %s' % target.topic)
MessagingTimeout: No reply on topic scheduler
WARNING [nova.scheduler.driver] Setting instance to ERROR state.
Then followed by an attempt to set the instance to ERROR state, which fails since the instance does not exist in the database.
Traceback (most recent call last):
File "/home/jenkins/workspace/gate-nova-python27/.tox/py27/local/lib/python2.7/site-packages/eventlet/hubs/hub.py", line 455, in fire_timers
timer()
File "/home/jenkins/workspace/gate-nova-python27/.tox/py27/local/lib/python2.7/site-packages/eventlet/hubs/timer.py", line 58, in __call__
cb(*args, **kw)
File "nova/utils.py", line 949, in wrapper
return func(*args, **kwargs)
File "nova/conductor/manager.py", line 618, in build_instances
instance.uuid, request_spec)
File "nova/scheduler/driver.py", line 67, in handle_schedule_error
'task_state': None})
File "nova/db/api.py", line 746, in instance_update_and_get_original
columns_to_join=columns_to_join)
File "nova/db/sqlalchemy/api.py", line 143, in wrapper
return f(*args, **kwargs)
File "nova/db/sqlalchemy/api.py", line 2282, in instance_update_and_get_original
columns_to_join=columns_to_join)
File "nova/db/sqlalchemy/api.py", line 2320, in _instance_update
columns_to_join=columns_to_join)
File "nova/db/sqlalchemy/api.py", line 1713, in _instance_get_by_uuid
raise exception.InstanceNotFound(instance_id=uuid)
Fix proposed to branch: master
Review: https:/