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https://issues.apache.org/jira/browse/ARTEMIS-5337?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Clebert Suconic closed ARTEMIS-5337.
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> Consumer + auto-create receives from existing wildcard queue
> ------------------------------------------------------------
>
> Key: ARTEMIS-5337
> URL: https://issues.apache.org/jira/browse/ARTEMIS-5337
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Components: AMQP, Broker
> Affects Versions: 2.31.2, 2.38.0
> Reporter: Jelle Smits
> Assignee: Justin Bertram
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.41.0
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> *Issue*
> In my setup where I have numerous consumers on explicitly defined queues
> (e.g. `queue.eventA.send, `queue.eventB.send`). These queues are auto-created
> and also have auto-delete turned on. Recently I added a wildcard consumer on
> `queue.*.send`, and noticed that after restarts of part of my applications, I
> occasionally get a consumer that _should_ be consuming on the specific queues
> (e.g. `queue.eventA.send`) suddenly starts consuming from `queue.*.send`
> instead, giving that queue 2 consumers instead of the expected 1.
> *Reproduction*
> I'm able to consistently reproduce the issue, but it's difficult to share as
> it relies on some Docker containers with my applications. High-over, it
> should be easily reproducible in a testcase as well:
> # Start a clean environment that initializes the following consumers (in any
> order):
> ## queue.eventA.send
> ## queue.eventB.send
> ## queue.*.send
> # Stop the consumers on `queue.eventA.send` and `queue.eventB.send`.
> # Wait until the queues are auto-removed as the queues now have 0 consumers
> (and 0 messages) (i.e. AMQ224112 logging appears)
> # Start the consumers again
> ## The queues won't be auto-created now
> ## The consumers will start consuming from the `queue.*.send` queue -> its
> consumer count will raise from 1 to 3
> If you were to do the same but the 'eventB' queue is not auto-deleted, that
> consumer will work just fine.
>
> To me, it feels like some internal divert remains when the queue is
> auto-deleted, causing it to not be created again and therefore messing up how
> my messages are consumed. Is this expected behavior?
>
> My (relevant) address settings are:
> * Address full policy = Page
> * Auto create addresses / queues = true
> * Auto delete addresses / queus = true -> when I switch this to false I can
> prevent the issue from occuring
> * Auto create dead letter & expiry resources = false
> * Routing type: Anycast
> * Address pattern: queue.#
>
> I tested on the 2 artemis versions mentioned.
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