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From "Jeannine Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-6424) Duplicate dead letter queues
Date Thu, 08 Mar 2018 23:37:00 GMT

    [ https://issues.apache.org/jira/browse/AMQ-6424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16392114#comment-16392114
] 

Jeannine Lee commented on AMQ-6424:
-----------------------------------

This has been a very painful problem for us - we are on version 5.9.0.

> Duplicate dead letter queues
> ----------------------------
>
>                 Key: AMQ-6424
>                 URL: https://issues.apache.org/jira/browse/AMQ-6424
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker, KahaDB
>    Affects Versions: 5.13.0, 5.13.3, 5.14.0
>         Environment: JDK 1.8.0_93 , Windows Server 2012 R2
>            Reporter: Berge Stillingen
>            Priority: Major
>              Labels: database, journal, mssql, paging
>
> In version 5.14 (and 5.13.3) it appears the broker is able to 'occasionally' create extra
DLQ-queues holding duplicate messages. 
> Browsing the admin console, you will sometimes see something like this: 
> - DLQ.myEventQueue 
> - DLQ.DLQ.myEventQueue 
> That both hold the samme message ID, eg. ID:ClientABC-61753-1471513949441-1:4:1:3:1	
> The one from DLQ.myEventQueue is a standard entry caused by a client transaction rollback.

> The (unwanted) one from DLQ.DLQ.myEventQueue has a 
> - dlqDeliveryFailureCause: java.lang.Throwable: duplicate paged in from store for queue://DLQ.myEventQueue
> At some point you can even get a third queue named 
> - DLQ.DLQ.DLQ.myEventQueue holding another message with the samme MessageID and the same
dlqDeliveryFailureCause 
> Reproduce: Haven't found a way to provoke the error. It happens occasionally in a semi-active
test environment running with Mule 3.6.2. 
> Best guess is that there is some issue with the use of Journaling and synchronization
between Kahadb and the MSSQL-database. 
> Configuration can be found at 
> http://activemq.2283324.n4.nabble.com/file/n4715868/activemq-anonymous.xml



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