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From "Gordon Sim (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (QPID-4903) python client deletes subscription queue even if it was declared to not be exclusive
Date Tue, 04 Jun 2013 08:39:21 GMT

     [ https://issues.apache.org/jira/browse/QPID-4903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gordon Sim updated QPID-4903:
-----------------------------

    Component/s:     (was: C++ Broker)
        Summary: python client deletes subscription queue even if it was declared to not be
exclusive  (was: address x-declare not follow AMQP)

This is an issue with the python client. It is issuing an explicit delete when closing the
link, regardless of whether the subscription queue is exclusive or not.
                
> python client deletes subscription queue even if it was declared to not be exclusive
> ------------------------------------------------------------------------------------
>
>                 Key: QPID-4903
>                 URL: https://issues.apache.org/jira/browse/QPID-4903
>             Project: Qpid
>          Issue Type: Bug
>          Components: Python Client
>    Affects Versions: 0.18
>         Environment: Redhat 6.3
>            Reporter: Minmin Ren
>
>   node_name = 'tt'
>   link_name = "%s_link_2" %(node_name)
>   addr_opts = {
>                 "create": "always",
>                 "node": {
>                     "type": "topic",
>                     "x-declare": {
>                         "durable": True,
>                         "auto-delete": True,
>                     },
>                 },
>                 "link": {
>                     "name": link_name,
>                     "durable": True,
>                     "x-declare": {
>                         "durable": False,
>                         "auto-delete": True,
>                         "exclusive": False,
>                     },
>                 },
>               }
>   addr = "%s ; %s" %(node_name, addr_opts)
> According to AMQP 0-10, in queue x-declare exclusive is not set and auto-delete is set,
the queue is deleted when all the
> consumers have finished using it.
> Howerver, I use example drain to test it:
> I set address above, then I run it ./drain -t 180, let me mark it node1
> Next, I login another terminal run ./drain -t 3, let me mark it node2
> After 3 senconds, node2 stop normally, but node1 print these results. I think the queue
link_2 should not be removed, because consumer on node1 is still exists.
> Traceback (most recent call last):
>   File "./drain_2.py", line 107, in <module>
>     msg = rcv.fetch(timeout=timeout)
>   File "<string>", line 6, in fetch
>   File "/usr/lib/python2.6/site-packages/qpid/messaging/endpoints.py", line 1016, in
fetch
>     msg = self.session._get(self, timeout=timeout)
>   File "<string>", line 6, in _get
>   File "/usr/lib/python2.6/site-packages/qpid/messaging/endpoints.py", line 649, in _get
>     timeout):
>   File "/usr/lib/python2.6/site-packages/qpid/messaging/endpoints.py", line 567, in _ewait
>     self.check_error()
>   File "/usr/lib/python2.6/site-packages/qpid/messaging/endpoints.py", line 556, in check_error
>     raise self.error
> qpid.messaging.exceptions.SessionError: Queue tt_link_2 has been deleted. (qpid/broker/Queue.cpp:1787)(408)

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