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https://issues.apache.org/jira/browse/AMQ-6858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16249773#comment-16249773
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ASF subversion and git services commented on AMQ-6858:
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Commit 41211c78d19b545a2352584d3598346aa3705be4 in activemq's branch 
refs/heads/master from [~cshannon]
[ https://git-wip-us.apache.org/repos/asf?p=activemq.git;h=41211c7 ]

AMQ-6858 - reworking durable subscription propagation fix

Significantly reworking previous fix so that the client id is properly
changed when tracking network proxy subscriptions. This makes it so
removal is done properly


> Fix several durable subscription bridge propagation issues
> ----------------------------------------------------------
>
>                 Key: AMQ-6858
>                 URL: https://issues.apache.org/jira/browse/AMQ-6858
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker, networkbridge
>            Reporter: Christopher L. Shannon
>            Assignee: Christopher L. Shannon
>             Fix For: 5.16.0
>
>
> While testing bridging together 3 or more brokers I discovered several 
> problems specifically related to durable subscription propagation.  In 
> general durable network subscriptions were not propagating properly when 
> using more than 2 brokers either by not being created at all, not being 
> removed, or even in some cases the same durable was being added twice and 
> causing bridge failures.
> This jira includes the following changes to fix these issues:
> # Currently proxy network subscriptions are not eligible to be conduit.  For 
> topics it doesn't make sense to not use conduit subscriptions so this should 
> be changed.  For queue subscriptions this can sometimes be useful to conduit 
> as well so I added a new flag for this.  Not allowing conduit topic proxy 
> network subs was causing collisions with durables and breaking bridges
> # The durable sync process should only ignore network durable subs for the 
> specific bridge it is syncing, it should still be re-adding subs for other 
> bridges otherwise they will get dropped
> # On demand subscription removal, the tracked demand sub should be checked to 
> see if it's a network demand sub and if it still has remote durable subs 
> attached to it.  If it does they need to be cleaned up and removed
> # Lastly, when creating a demand subscription the consumerId should only be 
> changed if the consumer is for a direct bridge and not a proxy bridge 
> otherwise the demand won't be properly tracked and removed later 



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