Description of problem:

1. When qpid-config user provides bad input when creating a queue/exchange, an exception is returned from the client, ie:

qpid-tools-0.18:
Failed: Exception: Exception from Agent: {u'error_code': 7L, u'error_text': 'illegal-argument: Cannot convert qpid.max_size to unsigned integer: F8:int64(-1) (qpid/broker/QueuePolicy.cpp:148)'}

qpid-tools-0.14:
Failed: SessionException: ExecutionException(error_code=531, command_id=serial(73), class_code=8, command_code=1, field_index=0, description=u'illegal-argument: Cannot convert qpid.max_size to unsigned integer: F8:int64(-1) (qpid/broker/QueuePolicy.cpp:143)', error_info={}, channel=1, id=serial(77))

^^ Correct - appropriate exception is returned from both the versions, the queue/exchange is not created).

on 2.2 packages (0.14) following error message is logged immediately to the broker log:
2012-11-14 16:15:27 error Execution exception: illegal-argument: Cannot convert qpid.max_size to unsigned integer: F8:int64(-1) (qpid/broker/QueuePolicy.cpp:143)

But this does not occur on 0.18 packages.

2. Then the qpid-tools user corrects his bad input and use the same name for a queue/exchange.

The queue/exchange is properly created, but after several seconds following message is logged to broker log:
2012-11-14 17:14:42 [Management] error Detected two management objects with the same identifier: 0-546-1--47(org.apache.qpid.broker:queue:q)

(^^this does not occur on 0.14 packages)

Maybe some management data do not get properly cleaned?

I do not see any real impact of this error, management tools lists only the one properly created queue/exchange. So the only issue here at the moment is that the management error message is logged to broker log.

Feel free to change the component to qpid-tools if you find it more appropriate.

Version-Release number of selected component (if applicable):
qpid-cpp-*-0.18-9
qpid-tools-0.18-6

How reproducible:
100%

Steps to Reproduce:  
1. qpid-config add queue q --max-queue-size=-1
2. qpid-config add queue q --max-queue-size=1
3. wait several seconds until following message is logged:
2012-11-14 17:14:42 [Management] error Detected two management objects with the same identifier: 0-546-1--47(org.apache.qpid.broker:queue:q)

Actual results:
Management error message in the broker log

Expected results:
No such message logged

Additional info: