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.
