James Furness created AMQ-5898:
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Summary: Physical queues forwarded from many virtual destinations
no longer supported
Key: AMQ-5898
URL: https://issues.apache.org/jira/browse/AMQ-5898
Project: ActiveMQ
Issue Type: Bug
Affects Versions: 5.11.1
Reporter: James Furness
Hi Tim,
AMQ-5187 breaks some of our message routing where we use virtual queues to
control mirroring/replication of messages.
A simple example...
{code}
VIRTUAL.PUB.ALL
-> queue://SUBSCRIBER1
-> queue://SUBSCRIBER2
VIRTUAL.PUB.SUBSCRIBER1
-> queue://SUBSCRIBER1
{code}
...fails [this
assert|https://github.com/apache/activemq/commit/f55edcfa25de1b55659a7113be60360c531ffa8a#diff-0def63df6ee6c0e4f8adcf00011b2f07R70]
because there are two composite destinations that route to
{{queue://SUBSCRIBER1}}. With asserts disabled messages are routed as expected.
We use layers of composite queues to achieve explicit routing of messages to
either one consumer or all consumers, and (also with static subscriptions) to
target optimal routes across a mixture of LAN and WAN links.
Fully appreciate that subscription recovery from virtual topics of a mapped
queue is a beneficial thing to do, however from our perspective it is also
useful to retain the behaviour of being able to have a many-to-one mapping
between composite queues and physical queues.
Could this validation relaxed, could it be made possible for the new behaviour
to be disabled or do you have any suggestions as to how else we could achieve
our use case?
Thanks,
James
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