[jira] Commented: (AMQNET-243) failover causes duplicate messages

["Timothy Bish (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/activemq/browse/AMQNET-243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=58250#action_58250 ] 

Timothy Bish commented on AMQNET-243:
-------------------------------------

I'd recommend testing this against the official 1.2.0 release as that's been out for quite some time now.

> failover causes duplicate messages
> ----------------------------------
>
>                 Key: AMQNET-243
>                 URL: https://issues.apache.org/activemq/browse/AMQNET-243
>             Project: ActiveMQ .Net
>          Issue Type: Bug
>          Components: NMS
>    Affects Versions: 1.1.0
>            Reporter: Mark Gellings
>            Assignee: Jim Gomes
>
> Reference https://issues.apache.org/activemq/browse/AMQ-2627 for specifics on problem.
> Attached to that issue is a zip file which is password protected with password "fridaytest".
> We're using ActiveMQ v5.2, jdbc master/slave MSSQL 2008. Attached is an NMS v1.2 RC4 consumer with a transacted session as well as activemq.xml.
> To replicate:
> 1) Work through the console prompts and produce 50 msgs.
> 2) Restart console and start consuming those 50 msgs.
> 3) In the middle of the consumer processing, restart broker
> 4) The last message consumer was processing will be resent and not marked as redelivered. (this is the idempotent msg problem. Ex. - instead of $500 getting deposited into your account, $1000 does)
> 5) Then NMS blows up which seems like a different problem?
> From what I understand this shouldn't be the case if you use a transacted session, however the attached console app can prove it is a problem.
> Bottomline--I thought this was why the camel idempotent consumer pattern [1] existed which can be leveraged by java clients.
> [1] http://fusesource.com/docs/router/1.6/eip/MsgEnd-Idempotent.html
> Regards,
> Mark

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