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https://issues.apache.org/jira/browse/QPID-5404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alan Conway resolved QPID-5404.
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Resolution: Fixed
Fixed by commit 1549844 in branch 'qpid/trunk'
> HA broker message duplication when deleting a queue with an alt-exchange
> ------------------------------------------------------------------------
>
> Key: QPID-5404
> URL: https://issues.apache.org/jira/browse/QPID-5404
> Project: Qpid
> Issue Type: Bug
> Components: C++ Clustering
> Affects Versions: 0.24
> Reporter: Alan Conway
> Assignee: Alan Conway
>
> See also: https://bugzilla.redhat.com/show_bug.cgi?id=859119
> Description of problem:
> When deleting a queue with an alternate exchange, both the primary and the
> backup brokers will route messages to the alt-exchange when the queue is
> deleted. This will cause the backups to potentially receive duplicate copies
> of the message if the alt-exchange is bound to a replicated queue (one set
> from the local route to the alt-exchange and another from the primary due to
> its route to the alt-exchange). Suggest that the backup brokers should not
> route messages to the alt-exchange when a queue is deleted.
> Additionally, for auto-delete queues with an alt-exchange, upon loss of a
> primary, the backup brokers should not immediately start the auto-delete
> process. Instead, the backups should wait for the promotion of a new
> primary. Upon selection of the new primary, the auto-delete process can
> start so that the new primary will route the messages to the alt-exchange and
> the backups will not route the messages to the alt-exchange.
> Version-Release number of selected component (if applicable):
> Qpid 0.18
> How reproducible:
> Backup needs to receive the QMF queue delete event prior to receiving the
> queue's deque replication events.
> Steps to reproduce:
> 1) Bind queue test0 to amq.fanout
> 2) Create queue test1 with an alt-exchange to amq.fanout
> 3) Send a message to test1
> 4) Delete queue test1
> Actual results:
> The queue test0 will have 1 message on the primary host but 2 messages on the
> backups
> Expected results:
> The queue test0 will have 1 message on all hosts
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