[ https://issues.apache.org/activemq/browse/AMQ-776?page=all ]
james strachan reassigned AMQ-776:
----------------------------------
Assignee: Rob Davies
> ConduitBridge can malfunction when first of a set of consumers goes away
> ------------------------------------------------------------------------
>
> Key: AMQ-776
> URL: https://issues.apache.org/activemq/browse/AMQ-776
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 4.0.1
> Reporter: Kevin Yaussy
> Assigned To: Rob Davies
> Priority: Critical
> Attachments: ConduitBridge.patch
>
>
> When the following scenario is followed, any of the subsequent consumers will
> stop receiving messages. I've reproduced this using the ConsumerTool, and
> ProducerTool supplied in the example area of the distribution.
> +++++++++++++++++++++++
> Start Broker A
> Start Broker B
> Start Consumer 1, connecting to Broker B, consuming FOO
> Start Consumer 2, connecting to Broker B, consuming FOO
> Start Publisher, connecting to Broker A, publishing FOO
> Ctl-C out of Consumer 1
> Consumer 2 stops receiving messages
> +++++++++++++++++++
> Seems to me that ConduitBridge is supposed to track all consumers for a given
> subscription, by way of DemandSubscription. It is seeding DemandSubscription
> with the originating consumer, but when subsequent consumers are added, the
> ConduitBridge::addToAlreadyInterestedConsumers re-adds the original
> subscriber to the DemandSubscription's map - so the map only ever has the
> original subscription.
> I've attached a patch. Hope the change is good.
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