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https://issues.apache.org/jira/browse/GERONIMO-3783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12564087#action_12564087
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Jarek Gawor commented on GERONIMO-3783:
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I've been debugging this issue a little and I'm getting lost in the activemq
code since I'm not familiar with it.
What I see is that sometimes the messages get dispatched right away and
sometimes they get queued. Once there are messages in the queue , the new
incoming messages will be queued (which makes sense). However, the messages in
the queue are never dispatched until the mdb is restarted. There is a method to
process the queued messages but it appears not to be called. That's where I'm
getting lost. I'm not sure when or what should be calling this method. Btw, the
decision to queue or dispatch right away happens in
PrefetchSubscription.add(MessageReference) function.
Increasing the prefetchSize value (or how it is known as
'maxMessagesPerSessions' in the activation spec) helps but does not completely
remove the problem.
> MessageDrivenBean delivery problem
> ----------------------------------
>
> Key: GERONIMO-3783
> URL: https://issues.apache.org/jira/browse/GERONIMO-3783
> Project: Geronimo
> Issue Type: Bug
> Security Level: public(Regular issues)
> Components: ActiveMQ
> Affects Versions: 2.1
> Environment: Windows XP Professional, 2GB ram, Java6SE, Geronimo
> 2.1-snapshot (2008-01-02)
> Reporter: Tomasz Mazan
> Priority: Critical
> Attachments: mdb-issue.zip
>
>
> MessageDrivenBean that listens on the Queue receive (and process) some
> messages and then stop receiving any new message until next module's restart.
> After restart a few next messages are delivered to MDB, and it stops again.
> Some additional information I put here
> http://www.nabble.com/Strange-plug-with-delivering-messages-to-MDB-td14923100s134.html
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