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From Rob Davies <rajdav...@gmail.com>
Subject Re: ActiveMQ thoughts
Date Sat, 22 Dec 2007 07:20:39 GMT
If you experience problems - the best thing to do is to raise a  
support issues (jira) , with a junit test case (hopefully one class -  
look at the src for examples) asap
Provide details about your environment, the version of AMQ you are  
running and any config information as well.

cheers,

Rob

On Dec 22, 2007, at 5:33 AM, amaas wrote:

>
> I watch this thread with interest because I also have issues with  
> activemq
> and have not found any solution (using released version 5.0). I kind  
> of lost
> hope right now with using activemq.
>
> I use Stomp for publisher and consumer. There are about 30 producers  
> and 40
> consumers each using their own connection. Traffic is only about a  
> couple
> per second with avg size of 500M.
>
> 1) Using AMQ storage, I experienced consumers block waiting for msgs  
> when
> there are msgs in the store and publisher submitting without  
> problem. This
> usually happens after half an hour or an hour after deployment.  
> Restarting
> activemq would fix the problem once (subsequent restart seems to  
> lost all
> msgs; the first restart showing 0 msg count despite non zero msg in  
> the
> queue)
> This error coincide with the blockage:
>
> 2007-12-12 19:38:02,597 [0.31.1.20:46277] ERROR  
> RecoveryListenerAdapter
> - Message id ID:prs2005-35745-1197487997180-4:28:-1:1:4 could not be
> recovered from the data store!
>
> 2) I then switch to use Kaha storage. The same problem occured.
>
> 3) I then try journaledJDBC with derby. I observed a different  
> problem. I
> saw errors and for each error I lost the msg. So while I was happier  
> that
> activemq didn't stop, I lost messages instead. The error in the log:
>
> 2007-12-19 17:00:09,826 [eckpoint worker] ERROR TransactionTemplate
> - Having to Rollback - caught an exception: java.io.IOException: A
> truncation error was encountered trying to shrink BLOB 'XX-RESOLVE- 
> XX' to
> length 1048576.
>
> 4) I then try journaledJDBC with mysql. Right away I got duplicate  
> key error
> on injection. This is becuase I use virtual topic. Apparently for each
> message there are two INSERT using the same record id. So I switch to
> regular queue. This time I started seeing this error in the log:
>
> 2007-12-20 15:31:45,878 [eckpoint Worker] ERROR  
> JournalPersistenceAdapter
> - Failed to checkpoint a message store:
> java.util.concurrent.ExecutionException: java.io.IOException: Already
> started
>
> I am really hoping I can use activemq with amq store (don't want to  
> extra db
> server to manage).
> But I just can't get it to work cleanly for me.
> -- 
> View this message in context: http://www.nabble.com/ActiveMQ-thoughts-tp14262131s2354p14466561.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>


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