[ https://issues.apache.org/activemq/browse/AMQ-1006?page=all ]
Jonas Lim resolved AMQ-1006.
----------------------------
Fix Version/s: 4.1.2
4.3.0
Resolution: Fixed
> RoundRobinDispatchPolicy divides uneven
> ---------------------------------------
>
> Key: AMQ-1006
> URL: https://issues.apache.org/activemq/browse/AMQ-1006
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 4.0.2
> Reporter: Holger Bruch
> Priority: Minor
> Fix For: 4.1.2, 4.3.0
>
> Attachments: RoundRobinDispatchPolicyDivide.patch
>
>
> In case that multiple consumers with different message selectors are registered for the
same destination, messages are not evenly divided.
> To reproduce, register 2 consumers for prio 9, one for prio 4. Of 1000 messages with
prio 9 both prio 9 consumers should receive 500. Actually, the first consumer gets 667 messages,
the second 333.
> This is caused by the consumer shifting strategy in the RoundRobinDispatchPolicy which
rotates consumers, even if they did not match.
> The attached file contains a testcase illustrating the behavior and a patch for RoundRobinDispatchPolicy,
that shifts the first matching consumer instead of the first.
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