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From "Sharath Komarla (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQ-1126) The Resource Adapter ignores the JMSXGroupID when dispatching to MDBs
Date Fri, 21 Nov 2008 17:08:05 GMT

    [ https://issues.apache.org/activemq/browse/AMQ-1126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=47559#action_47559
] 

Sharath Komarla commented on AMQ-1126:
--------------------------------------

Gary, I mispoke slightly.  The unit test I have does not use the RA, but a simple test with
logging to show the group the message belongs to. I will attach that anyways, but not sure
if that should be tied to this JIRA issue.  let me just clean it up a little since it is slightly
cluttered at the moment.. should be attached in an hour or so

> The Resource Adapter ignores the JMSXGroupID when dispatching to MDBs
> ---------------------------------------------------------------------
>
>                 Key: AMQ-1126
>                 URL: https://issues.apache.org/activemq/browse/AMQ-1126
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: JCA Container
>    Affects Versions: 4.0.1
>         Environment: Java 1.4.2_08
> JBoss 4.0.4
> ActiveMQ 4.0.1
>            Reporter: John Robinson
>             Fix For: 5.3.0
>
>
> Integrate AMQ into JBoss using the data source, and resource adapter.  Create an outbound
queue and an MDB with a pool size of 100.  Dispatch several messages to the outbound queue,
setting the JMSXGroupID property on the message to be the same value each time.  In the MDB's
onMessage method print out the MDBs toString (don't override toString) and you should see
something that looks like:
> OutQueueProcessorBean@19a7266
> Observe two things:
> a) Many messages are processed in parallel
> b) Many different values will occur after the @ in the above message, denoting that more
than on MDB instance is being handed messages.
> The correct behavior would be to dispatch messages with the same group id to the same
MDB instance in sequence.  This would allow messages from different groups to be processed
in parallel, but messages in any one group would be processed serially, in the order in which
they were placed into the queue.

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