[jira] [Resolved] (CAMEL-8135) DeadLetterChannel moves message to DLQ before FailOverLoadBalancer attempts the second node

["Claus Ibsen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-8135?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Claus Ibsen resolved CAMEL-8135.
--------------------------------
    Resolution: Not a Problem
      Assignee: Claus Ibsen

Use the mailing list to get help first next time, instead of creating a JIRA ticket please. Eg as we say on
http://camel.apache.org/support

And a DL error handler is designed to move to DLQ when it exhausts.
And the LB has a option inheritErrorHandler you can set to false to not use the DL error handler.

> DeadLetterChannel moves message to DLQ before FailOverLoadBalancer attempts the second node
> -------------------------------------------------------------------------------------------
>
>                 Key: CAMEL-8135
>                 URL: https://issues.apache.org/jira/browse/CAMEL-8135
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-core
>    Affects Versions: 2.13.2
>         Environment: ServiceMix 5.3.0
>            Reporter: metatech
>            Assignee: Claus Ibsen
>         Attachments: myservice.xml
>
>
> When a route is defined with both a "errorHandlerRef" and a failover load balancer, the DeadLetterChannel considers the message as failed and moves it to the Dead Letter Queue, before the failover load balancer could try the second node.
> In attachment, there is a a test driver that reproduces the problem. Two HTTP backends are created : the first is down and the second is up.
> A "timer" route calls :
> 1. a route with load balancing and *without* DLQ : this works fine.  An HTTP request is sent to the first node (which is down). Afterwards another HTTP request is sent to the second node (which is up).
> 2. a route with load balancing and *with* DLQ : this does not work.  An HTTP request is sent to the first node (which is down). Afterwards, the request is moved to the DLQ, without attempting the second node.
> I suspect that the problem occurs because the error persists in the "UnitOfWork".
> The problem is reproduceable both in Camel 2.10.7 and 2.13.2.



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