Github user jbertram commented on the issue:
https://github.com/apache/activemq-artemis/pull/701
The original use-case was related to Stomp durable subscriptions which in
core terms is simply a durable, non-temporary queue. Our Stomp implementation
allows individual Stomp clients to connect to the same durable subscription by
connecting with the same client-id and durable-subscription-name values, hence
"sharing" the subscription. The danger here is that a client which should not
be allowed to connect to the durable subscription would in fact connect to it
and essentially steal messages from the legitimate client. However, by
enforcing security on the individual queue that situation can be avoided.
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