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https://issues.apache.org/jira/browse/ARTEMIS-5780?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justin Bertram reassigned ARTEMIS-5780:
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Assignee: Justin Bertram
> MQTT session queues are not deleted after broker restart when clients
> connected with cleanStart=true and SessionExpiryInterval=0
> --------------------------------------------------------------------------------------------------------------------------------
>
> Key: ARTEMIS-5780
> URL: https://issues.apache.org/jira/browse/ARTEMIS-5780
> Project: Artemis
> Issue Type: Bug
> Components: Broker
> Affects Versions: 2.44.0
> Environment: * OS: Windows Server 2022
> * Artemis: Standalone broker (default {{{}broker.xml{}}}), running as
> Windows Service
> * Java: JDK 17.0.11_9
> * MQTT clients: Eclipse Paho MQTT v5
> ** {{cleanStart = true}}
> ** {{sessionExpiryInterval = 0}}
> ** clientID changes on each start
> ** {{keepAliveInterval = 60}}
> ** Multiple topic subscriptions
> Reporter: Hannes Krennmeir
> Assignee: Justin Bertram
> Priority: Major
>
> h3. *Observed Problem*
> MQTT session queues are correctly deleted when clients disconnect normally or
> even crash while the broker is running.
> However, in a specific sequence, the session queues are {*}not removed{*},
> and retained session metadata remains present.
> h3. *Steps to Reproduce*
> # Start the broker (Artemis 2.44.0).
> # MQTT clients connect with:
> ** cleanStart=true
> ** sessionExpiryInterval=0
> ** unique clientID per connection
> ** multiple subscriptions
> # While the clients are still connected, {*}stop the Artemis broker{*}.
> # After the broker has stopped, {*}terminate the clients{*}.
> # Restart Artemis.
> h3. *Actual Behavior*
> * After restarting Artemis, the MQTT connections and sessions are no longer
> present (expected).
> * *But the MQTT session queues created for the subscriptions still exist.*
> * Messages stored under the system address *{{$sys.mqtt.sessions}}* also
> remain.
> * Enabling
> <auto-delete-queues>true</auto-delete-queues>
> <auto-delete-addresses>true</auto-delete-addresses>
> has no effect, because the session queues have the property {*}Auto created =
> false{*}.
> h3. *Expected Behavior*
> * All MQTT session queues created for the subscription should be removed,
> because:
> ** {{cleanStart = true}}
> ** {{sessionExpiryInterval = 0}}
> ** clientID is not reused
> * All session-related messages under *{{$sys.mqtt.sessions}}* should also be
> removed.
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