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https://issues.apache.org/jira/browse/AMQ-4565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13673204#comment-13673204
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Torsten Mielke commented on AMQ-4565:
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Is this problem related to or even the same as AMQ-4356?
> Cannot unsubscribe from virtual topics
> --------------------------------------
>
> Key: AMQ-4565
> URL: https://issues.apache.org/jira/browse/AMQ-4565
> Project: ActiveMQ
> Issue Type: Improvement
> Components: Broker
> Affects Versions: 5.8.0
> Reporter: Christian Posta
>
> Virtual Topics allow us to do things with pub/sub that we cannot otherwise do
> with JMS 1.1 spec. However, with durable subs we can "unsubscribe" a consumer
> telling the broker we are no longer interested in messages. If we just stop
> consuming, the queues can fill up.
> With the queue-based impl of VT, we have to wait for the queue to be empty to
> delete it... to do that reliably, the producer would have to stop producing?
> And/or we have to use some TTL for the messages? Not sure...
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