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https://issues.apache.org/jira/browse/QPID-3215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13021683#comment-13021683
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Alan Conway commented on QPID-3215:
-----------------------------------
fixed on trunk r1095144
> cached exchange reference can cause cluster inconsistencies if exchange is
> deleted/recreated
> --------------------------------------------------------------------------------------------
>
> Key: QPID-3215
> URL: https://issues.apache.org/jira/browse/QPID-3215
> Project: Qpid
> Issue Type: Bug
> Components: C++ Broker, C++ Clustering
> Affects Versions: 0.10
> Reporter: Alan Conway
> Assignee: Alan Conway
> Fix For: 0.11
>
>
> Description of problem:
> SemanticState::route() uses a simple cache variable to avoid looking up the
> exchange for every message. However if the exchange in question is deleted,
> even if then recreated, this can cause inconsistencies in a cluster.
> Version-Release number of selected component (if applicable):
> 1.3
> How reproducible:
> 100% (Quite a contrived example though)
> Steps to Reproduce:
> 1. start one cluster node
> 2. create an exchange, a queue and a binding between them
> qpid-config add exchange topic x
> qpid-config add queue q
> qpid-config bind x q k
> 3. start a session and send a message to the exchange with the relevant key
> (leave session running)
> qpid-send --content-stdin --address x/k
> then enter a few lines to send some messages
> 4. start a new cluster node
> 5. delete and recreate the exchange, this time add in a different binding
> qpid-config del exchange x
> qpid-config add exchange topic x
> qpid-config add queue q2
> qpid-config bind x q2 k
> 6. send some more messages on the session from 3. with same exchange and key
> (i.e. type in some more messages if using qpid-send as suggested)
> now have an inconsistency where the second node has some messages in q2 and
> some (though fewer than first node) in q1, whereas for first node all the
> messages are in q1
> 7. qpid-receive --address 'q2; {mode: browse}' --broker localhost:5673
> --capacity 1 (assuming second node is 5673)
> Actual results:
> First node shutsdown with inconsistent error
> Expected results:
> No inconsistency, should be able to run the command in 7 against q or q2 on
> either node and see the same results.
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