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https://issues.apache.org/jira/browse/QPID-6599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14592086#comment-14592086
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ASF subversion and git services commented on QPID-6599:
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Commit 1686269 from [~k-wall] in branch 'qpid/trunk'
[ https://svn.apache.org/r1686269 ]

QPID-6599: [Python Tests AMQP 0-8] Supporting test for Java Broker Defect

> Attempting to actively declare a reserved exchange causes existing exchange 
> to be partially removed from the in memory model 
> -----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: QPID-6599
>                 URL: https://issues.apache.org/jira/browse/QPID-6599
>             Project: Qpid
>          Issue Type: Bug
>          Components: Java Broker
>            Reporter: Keith Wall
>            Assignee: Keith Wall
>             Fix For: 0.30, 0.32
>
>
> If I try to actively declare a reserved exchange (amq.direct for instance), 
> the Broker correctly detects that the attempt to create an exchange with the 
> prefix "amp." is disallowed AbstractExchange#onValidate, but then goes on to 
> erroneously unlink the existing existing from the in memory model.  Clients 
> then see 404 "Unknown exchange: 'amq.direct'".  Restarting the Broker works 
> around the problem.
> This problem cannot occur when using recent versions of the Qpid Java Client 
> (which always send reserved exchange declares as passive).  It came to light 
> as a user was using a Qpid Java client circa 2008 (~0.6) which did not. 



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