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From "Ashwin Karpe (Issue Comment Edited) (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Edited] (CAMEL-5070) Message Loss when using Weighted Round Robin LoadBalancer
Date Fri, 09 Mar 2012 19:26:59 GMT

    [ https://issues.apache.org/jira/browse/CAMEL-5070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13226354#comment-13226354
] 

Ashwin Karpe edited comment on CAMEL-5070 at 3/9/12 7:26 PM:
-------------------------------------------------------------

Applied fix to trunk as revision r1298993.

Thanks to Nikolaus Dims for providing the patch.

- Ashwin...
                
      was (Author: akarpe):
    Applied fix to trunk as revision r1298993.

- Ashwin...
                  
> Message Loss when using Weighted Round Robin LoadBalancer
> ---------------------------------------------------------
>
>                 Key: CAMEL-5070
>                 URL: https://issues.apache.org/jira/browse/CAMEL-5070
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-core
>    Affects Versions: 2.9.1
>            Reporter: Nikolaos Dimos
>            Assignee: Ashwin Karpe
>         Attachments: loadbalancer-itest.zip
>
>
> chooseProcessor method accesses resources in a non synchronized fashion. This leads in
errors during loadbalancing and as a result messages are lost. I have created a project that
provides an integration test (using karaf 2.2.5 and a custom command to check messages of
the activemq broker) with a custom weighted round robin loadbalancer that "seems" to solve
the issue of lost messages.
>  
> The problem with the provided solution is that when messages are dequeued from the second
stage of queues (queues1, 2 and 3) in custom-loadbalancer-route subproject the jmsconsumer
threads also block (checked this using profiler). I would expect only the jmsconsumer threads
of the first queue (initial.queue) to block waiting for the synchronized chooseProcessor method.
Any clues on why this happens?

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