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[Bug 1338403] [NEW] circular reference detected with exception

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Robert Collins <1338403@xxxxxxxxxxxxxxxxxx>
Date: Mon, 07 Jul 2014 02:15:01 -0000
Reply-to: Bug 1338403 <1338403@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

2014-07-07 02:10:08.727 10283 ERROR oslo.messaging.rpc.dispatcher [req-54c68afe-91a8-4a99-86e8-785c0abf7688 ] Exception during message handling: Circular reference detected
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher Traceback (most recent call last):
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 133, in _dispatch_and_reply
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     incoming.message))
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 176, in _dispatch
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     return self._do_dispatch(endpoint, method, ctxt, args)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 122, in _do_dispatch
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     result = getattr(endpoint, method)(ctxt, **new_args)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/exception.py", line 88, in wrapped
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     payload)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/openstack/common/excutils.py", line 82, in __exit__
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/exception.py", line 71, in wrapped
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     return f(self, context, *args, **kw)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/compute/manager.py", line 336, in decorated_function
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     function(self, context, *args, **kwargs)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/compute/utils.py", line 437, in __exit__
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     exc_tb=exc_tb)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/objects/base.py", line 142, in wrapper
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     args, kwargs)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/conductor/rpcapi.py", line 355, in object_class_action
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     objver=objver, args=args, kwargs=kwargs)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/rpc/client.py", line 150, in call
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     wait_for_reply=True, timeout=timeout)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/transport.py", line 90, in _send
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     timeout=timeout)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/_drivers/amqpdriver.py", line 412, in send
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     return self._send(target, ctxt, message, wait_for_reply, timeout)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/_drivers/amqpdriver.py", line 385, in _send
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     msg = rpc_common.serialize_msg(msg)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/_drivers/common.py", line 462, in serialize_msg
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     _MESSAGE_KEY: jsonutils.dumps(raw_msg)}
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/openstack/common/jsonutils.py", line 164, in dumps
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     return json.dumps(value, default=default, **kwargs)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/json/__init__.py", line 250, in dumps
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     sort_keys=sort_keys, **kw).encode(obj)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/json/encoder.py", line 207, in encode
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     chunks = self.iterencode(o, _one_shot=True)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/json/encoder.py", line 270, in iterencode
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     return _iterencode(o, 0)
2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher ValueError: Circular reference detected

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1338403

Title:
  circular reference detected with exception

Status in OpenStack Compute (Nova):
  New

Bug description:
  2014-07-07 02:10:08.727 10283 ERROR oslo.messaging.rpc.dispatcher [req-54c68afe-91a8-4a99-86e8-785c0abf7688 ] Exception during message handling: Circular reference detected
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher Traceback (most recent call last):
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 133, in _dispatch_and_reply
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     incoming.message))
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 176, in _dispatch
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     return self._do_dispatch(endpoint, method, ctxt, args)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 122, in _do_dispatch
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     result = getattr(endpoint, method)(ctxt, **new_args)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/exception.py", line 88, in wrapped
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     payload)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/openstack/common/excutils.py", line 82, in __exit__
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/exception.py", line 71, in wrapped
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     return f(self, context, *args, **kw)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/compute/manager.py", line 336, in decorated_function
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     function(self, context, *args, **kwargs)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/compute/utils.py", line 437, in __exit__
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     exc_tb=exc_tb)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/objects/base.py", line 142, in wrapper
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     args, kwargs)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/conductor/rpcapi.py", line 355, in object_class_action
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     objver=objver, args=args, kwargs=kwargs)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/rpc/client.py", line 150, in call
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     wait_for_reply=True, timeout=timeout)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/transport.py", line 90, in _send
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     timeout=timeout)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/_drivers/amqpdriver.py", line 412, in send
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     return self._send(target, ctxt, message, wait_for_reply, timeout)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/_drivers/amqpdriver.py", line 385, in _send
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     msg = rpc_common.serialize_msg(msg)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/_drivers/common.py", line 462, in serialize_msg
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     _MESSAGE_KEY: jsonutils.dumps(raw_msg)}
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/opt/stack/venvs/nova/local/lib/python2.7/site-packages/oslo/messaging/openstack/common/jsonutils.py", line 164, in dumps
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     return json.dumps(value, default=default, **kwargs)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/json/__init__.py", line 250, in dumps
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     sort_keys=sort_keys, **kw).encode(obj)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/json/encoder.py", line 207, in encode
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     chunks = self.iterencode(o, _one_shot=True)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/json/encoder.py", line 270, in iterencode
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher     return _iterencode(o, 0)
  2014-07-07 02:10:08.727 10283 TRACE oslo.messaging.rpc.dispatcher ValueError: Circular reference detected

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Follow ups

[Bug 1338403] Re: circular reference detected with exception
From: Grzegorz Grasza, 2015-03-11
[Bug 1338403] Re: circular reference detected with exception
From: Grzegorz Grasza, 2015-03-10
[Bug 1338403] Re: circular reference detected with exception
From: Dmitry "Divius" Tantsur, 2014-09-09
[Bug 1338403] Re: circular reference detected with exception
From: Robert Collins, 2014-07-07
[Bug 1338403] [NEW] circular reference detected with exception
From: Robert Collins, 2014-07-07
References

[Bug 1338403] [NEW] circular reference detected with exception
From: Robert Collins, 2014-07-07