conduitSubscriptions flag on networkConnector element should only affect
queues, not topics
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Key: AMQ-2711
URL: https://issues.apache.org/activemq/browse/AMQ-2711
Project: ActiveMQ
Issue Type: Improvement
Components: Connector
Affects Versions: 5.3.1
Reporter: Fintan Bolton
Fix For: 5.4.0
In the doc for 'Networks of Brokers',
http://activemq.apache.org/networks-of-brokers.html, it says that it is
sometimes useful to disable {{conduitSubscriptions}} for queues, because this
gives you a better load balancing effect when consumers are attached to various
points in the broker network. The only trouble is, currently it does not seem
practical to disable {{conduitSubscriptions}}, because this almost inevitably
causes trouble with topics. That is, it can easily happen that topic messages
are duplicated, if {{conduitSubscriptions}} is set to {{false}}.
It seems like it would be better if topic subscriptions where *always* treated
as conduits and the {{conduitSubscriptions}} attribute only affected queue
subscriptions. That way, you could happily disable conduits for queues while
leaving it enabled for topics.
A bit of investigation is probably needed, however, to make sure that there
aren't any edge cases where you might actually want to disable conduit
subscriptions for topics.
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