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https://issues.apache.org/jira/browse/QPID-1275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12675352#action_12675352
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Martin Ritchie commented on QPID-1275:
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There is code in the client to detect when a subscription changes however the
test makes a new fresh connection so is unaware that there is an existing
subscription.
The broker however is aware of the existing subscription and does not recognise
the new durable subscription as a replacement. Hence we end up with the topic
being bound twice.
> Changing a DurableSubscriber's Selector does not remove the old binding
> -----------------------------------------------------------------------
>
> Key: QPID-1275
> URL: https://issues.apache.org/jira/browse/QPID-1275
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker, Java Client
> Affects Versions: M3, M4
> Reporter: Martin Ritchie
>
> This can be evidenced with the BDBMessageStore (DerbyMessageStore upgrade
> still pending)
> BDBUpgradeTest.testDurabilitySelectors
> On recovery there are two binding values for the Durable Subscriber:
> main 2008-09-05 15:01:43,801 INFO [server.store.berkeleydb.BDBMessageStore]
> Restoring binding: (Exchange: amq.topic, Queue: clientid:MySubscription,
> Routing Key: MyDurableSubscriptionTestTopic, Arguments: null)
> main 2008-09-05 15:01:43,802 INFO [server.store.berkeleydb.BDBMessageStore]
> Restoring binding: (Exchange: amq.topic, Queue: clientid:MySubscription,
> Routing Key: MyDurableSubscriptionTestTopic, Arguments:
> {x-filter-jms-selector=[LONG_STRING: odd=true]})
> Steps to reproduce.
> Create DurableSubscriber with no selector
> Close subscriber
> Create DurableSubscriber with selector odd=true
> Close subscriber
> Restart broker.
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