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From "Anders Bengtsson (JIRA)" <>
Subject [jira] Commented: (AMQ-845) Sending messages to a topic with an inactive durable subscription will hang producers
Date Tue, 29 Aug 2006 08:14:23 GMT
    [ ] 
Anders Bengtsson commented on AMQ-845:

If you give it a higher memory limit it will accept a few more messages before blocking the
producer. It seems to keep stuff in memory, making it very limited in the queue depths it
can handle.

We're also completely blocked by this, since our application requires large pending queues.

> Sending messages to a topic with an inactive durable subscription will hang producers
> -------------------------------------------------------------------------------------
>                 Key: AMQ-845
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 4.0.1
>         Environment: Linux Red Hat Enterprise 4
> java jdk 1.4.2-b28  (or 1.5.0_06-b05)
>            Reporter: Christopher Mihaly
>         Assigned To: Rob Davies
>            Priority: Blocker
>         Attachments:
> If you have a durable subsciber that is not on-line, and you have producers sending message,
eventually the server will hang on that topic.
> I have attached a zip file with a junit test case and my activemq configuration.  The
test case has two tests, one that creates a durable subscription, that will succeed, and a
second that starts publishing up to 100000 events, which will hang.  I don't really know how
to interrupt the all, so the test case never finishes.  Anyway, it does show the problem and
is 100% repeatable on my system.
> The config file is set to use a SQLServer database, but the stock journal or a derby
persistence manager will do the same thing.  I just switched to mssql server because I can
then see what is going on in the database.  And records are being added to the database all
the way up to when the server hangs. I also doubled the memory manager limit and moved the
jmx rmi port to 1080 since I have another server running at 1099.

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