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Posted to issues@activemq.apache.org by "Justin Bertram (Jira)" <ji...@apache.org> on 2021/04/13 16:51:00 UTC

[jira] [Commented] (ARTEMIS-3236) broker.xml defined queue deleted on MQTT client disconnect with auto-delete-created-queues=false

    [ https://issues.apache.org/jira/browse/ARTEMIS-3236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17320311#comment-17320311 ] 

Justin Bertram commented on ARTEMIS-3236:
-----------------------------------------

Can you elaborate on the use-case here a bit? It's not normal to statically configure what's normally called a "subscription" queue. Typically the broker itself will create and delete these based on individual protocol semantics.

> broker.xml defined queue deleted on MQTT client disconnect with auto-delete-created-queues=false
> ------------------------------------------------------------------------------------------------
>
>                 Key: ARTEMIS-3236
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-3236
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>    Affects Versions: 2.17.0
>         Environment: Artemis 2.17.0 on OpenJDK11
>            Reporter: Thorsten Kunz
>            Assignee: Domenico Francesco Bruscino
>            Priority: Major
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> If have the following address configuration in my broker.xml
> {code:java}
>          <address name="COMMONNOTIFICATIONS.SMS">
>             <multicast>
>                <queue name="mqtt-client1.COMMONNOTIFICATIONS.SMS"/>
>                <queue name="mqtt-client2.COMMONNOTIFICATIONS.SMS"/>
>             </multicast>
>          </address>{code}
> With the following address configuration for match="#" and no more specific configs
> {code:java}
>             <auto-create-queues>false</auto-create-queues>
>             <auto-delete-queues>true</auto-delete-queues>
>             <auto-delete-created-queues>false</auto-delete-created-queues>{code}
> So since the queues are not auto-created but statically in the configuration I would expect the queue to survive the client disconnect even if it doesn't contain any messages.
>  But the observed behaviour is that the client can connect after the broker is started and if the client disconnects the queue is gone so that when the client reconnects it gets an error message that the queue is not there anymore.



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