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https://issues.apache.org/jira/browse/ARTEMIS-4312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17732582#comment-17732582
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ASF subversion and git services commented on ARTEMIS-4312:
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Commit 3ff8419a4b0e32bff5b43997d09db9a9acc28586 in activemq-artemis's branch
refs/heads/main from Justin Bertram
[ https://gitbox.apache.org/repos/asf?p=activemq-artemis.git;h=3ff8419a4b ]
ARTEMIS-4312 dupes w/redistribution and multicast
Multiple multicast queues on the same address can lead to duplicate
messages during redistribution in a cluster.
> Duplicates with redistribution and multiple multicast queues on the same
> address
> --------------------------------------------------------------------------------
>
> Key: ARTEMIS-4312
> URL: https://issues.apache.org/jira/browse/ARTEMIS-4312
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Affects Versions: 2.28.0
> Reporter: Justin Bertram
> Assignee: Justin Bertram
> Priority: Major
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Consider a set-up with two brokers clustered together and redistribution
> enabled and a address with about a dozen multicast subscription queues bound
> to it. If a consumer of one of those subscriptions goes offline, messages
> will begin to build up in the queue (as expected). When the consumer comes
> back online, whatever broker it attaches to first will have messages
> redistributed from the other broker in the cluster. When this redistribution
> happens the other multicast queues receive some of those redistributed
> messages (although not all of them) even though they had already received
> them previously.
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