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From "Jan Vogelgesang (JIRA)" <jira+amq...@apache.org>
Subject [jira] Commented: (AMQNET-294) durable subscription message loss when master broker fails to slave
Date Fri, 26 Nov 2010 23:55:25 GMT

    [ https://issues.apache.org/activemq/browse/AMQNET-294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=63581#action_63581
] 

Jan Vogelgesang commented on AMQNET-294:
----------------------------------------

It looks that it can be similar problem to AMQNET-293.

If you your connection to broker is lost when you are in OnMessage method then your consumer
may not be recovered. I suspect that if you remove Sleep(200) from OnMessage it will behave
better... (less time you spend in OnMessage then less chance that connection break will happen
there)

Please build NMS from trunk but use the MessageConsumer.cs file I put as the solution to the
AMQNET-293 and let me know if it helps.


> durable subscription message loss when master broker fails to slave
> -------------------------------------------------------------------
>
>                 Key: AMQNET-294
>                 URL: https://issues.apache.org/activemq/browse/AMQNET-294
>             Project: ActiveMQ .Net
>          Issue Type: Bug
>          Components: NMS
>    Affects Versions: 1.4.1
>         Environment: Windows 7 (client), Windows Server 2008 64-bit (server brokers run
on), Sql Server 2008 (database)
>            Reporter: Mark Gellings
>            Assignee: Jim Gomes
>             Fix For: 1.5.0
>
>         Attachments: Apache.NMS.Test.zip
>
>
> We are seeing message loss on a durable subscription when using NMS ActiveMQ v1.4.1 and
ActiveMQ v5.4.1.
> Please run the included NUnit test and watch the console output.  When it says "Failover
the broker now!" do as it says.  About 75% of the time less than half of the expected 250
messages come through.
> Using version 1.1 of NMS the majority of the time the test passes.  I have seen it fail
only a few times with this earlier version, and when it does there are only a couple messages
that don't come through.
> In the zip file will be the unit test, and a config directory containing the master and
slave activemq configurations.  We are using JDBC master/slave.

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