[jira] Updated: (AMQ-2711) conduitSubscriptions flag on networkConnector element should only affect queues, not topics

["Bruce Snyder (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/activemq/browse/AMQ-2711?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bruce Snyder updated AMQ-2711:
------------------------------

    Fix Version/s: 5.5.0
                       (was: 5.4.1)

> conduitSubscriptions flag on networkConnector element should only affect queues, not topics
> -------------------------------------------------------------------------------------------
>
>                 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: 5.5.0
>
>
> 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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