Github user clebertsuconic commented on the issue: https://github.com/apache/activemq-artemis/pull/672 I don't think we can merge this... this is introducing a new datatype through the protocol and it will break compatibility with older clients in both directions. You would need to add handchecks for the version ID on the protocol if that's possible or not. I wouldn't do a hashMap storing sessions. I would just disable reconnections or kill all the sessions.
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