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https://issues.apache.org/jira/browse/AMQ-762?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dejan Bosanac updated AMQ-762:
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Fix Version/s: (was: 5.4.2)
5.5.0
> Message Group based load balancing not well distributed across brokers
> ----------------------------------------------------------------------
>
> Key: AMQ-762
> URL: https://issues.apache.org/jira/browse/AMQ-762
> Project: ActiveMQ
> Issue Type: Improvement
> Affects Versions: 4.0
> Environment: Active MQ 4.0, Lingo 1.1
> Reporter: Sanjiv Jivan
> Fix For: 5.5.0
>
> Attachments: lingocluster.zip
>
>
> I started 2 servers, each of which have an embedded broker. A shell based
> chield sends messages to 30 different message groups (using command "register
> <message group>" in the samepl app provided. Only 2 mesages are received by
> server1, 3 by server2 and 25 by server3. The load balancing distribution is
> highly unenen.
> As suggested, I also tried setting a low destination queue prefetch value
> (consumer.prefetch=1) but the result was the same.
> To run sample :
> 1. Unzip attached file and run "maven.bat" from the oot directory (Maven 1.0)
> 2. Open 3 DOS boxes in the dist\bin folder and run
> "startoptimizerPooled.bat", "startOptimizerPooled2.bat" and
> "startOptimizerPooled3.bat" in each DOS box respectively.
> 3. Step 2 starts a network of 3 servers apps which have an embedded broker.
> The Spring configuration files for each of these servers is in the dist\conf
> directory.
> 4. Open another DOS box in dist\bin and start a test client by running
> "startClientShell.bat"
> 5. This command driver test client accepts commads in the form
> "register <message group>"
> "close <message group>"
> and "exit"
> NOTE: The command "close <message group>" is supposed to close/reset the
> message group by issueing a "JMSXGroupSeq" header as described here :
> http://www.activemq.org/site/message-groups.html
> 6. Try sending several messages to the server by issuing several commands
> like "regeister A", "register B", "register C" and so on.. You'll see the
> highly uneven distibution of messages. Only one or two messages are received
> my 2 servers while the third one receives a majority of the messages.
> Please let me know if you have trouble running the sample or replicating the
> issue.
> Thanks,
> Sanjiv
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