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Re: [JBoss-user] MDB stopping and starting
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From: Adrian B. <ad...@jb...> - 2003-09-30 22:15:46
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Hello Bruce, I couldn't understands the details of your test, so I've created my own. I think it reproduces what you are asking for? I have posted it to the forums, you can choose to respond there or here. http://www.jboss.org/thread.jsp?forum=48&thread=39974 Regards, Adrian On Tue, 2003-09-30 at 20:57, Bruce Slawson wrote: > No, that doesn't appear to be that problem. When the message > disappears, all the DLQs are empty. Which release has that fix? I am > using 3.2.2RC4. > > When I redeploy the ear or restart JBoss the lost message sometimes > reappears in the DLQ. Not always though. > > Bruce > > > Adrian Brock wrote: > > >On Tue, 2003-09-30 at 18:04, Bruce Slawson wrote: > > > > > >>Adrian, > >> > >>I did see that message too. Any idea why it doesn't work reliably? > >> > >> > >> > > > >Is this the bug I fixed where the Redelivered flag/count wasn't > >reset when it was sent to the dlq? So another mdb pulling from the dlq > >would send it to its dlq straight away. > > > >This was also on this list last month. > > > >Regards, > >Adrian > > > > > > > >>Bruce > >> > >> > >> > >>Adrian Brock wrote: > >> > >> > >> > >>>deja-vu :-) > >>> > >>>http://www.mail-archive.com/jbo...@li.../msg31889.html > >>> > >>>Regards, > >>>Adrian > >>> > >>>On Tue, 2003-09-30 at 01:32, Bruce Slawson wrote: > >>> > >>> > >>> > >>> > >>>>I know this question has been asked a few times before but I have not > >>>>found a way to stop and start MDBs that works reliably. Might be a bug > >>>>in the JMSContainerInvoker code. > >>>> > >>>>Adrian Brock responded a while back: > >>>> > >>>><snip> > >>>> > >>>> > >>>>>1. Is it possible to disable/enable an MDB from receiving messages > >>>>>from a queue via JMX? > >>>>> > >>>>> > >>>>There is an outstanding bug report (670068) where it > >>>>doesn't setup ENC correctly if you manually stop()/start() > >>>>the MDB container. > >>>> > >>>>A simpler approach would be to register the JMSContainerInvoker > >>>>as an MBean, exposing the JMS connection stop()/start() > >>>></snip> > >>>> > >>>>I used this as my starting point. The JMSContainerInvoker in 3.2.2 has > >>>>stopDelivery() and startDelivery() methods in addition to the stop() and > >>>>start() methods Adrian mentioned. > >>>> > >>>>What I want to do is create a DLQ monitor MDB that will pull messages > >>>>off the DLQ and put them back on the originating queue. I wanted the > >>>>monitor start the MDB, sleep for a few seconds, and then stop the MDB. > >>>>The monitor is to run periodically using a timer. > >>>> > >>>>What I did first was register the invoker proxy bindings, container > >>>>configuration, and assign the configuration name to the MDB in > >>>>jboss.xml. I also set DeliveryActive to false so the MDB would not be > >>>>active a startup. > >>>> > >>>>Next I wrote a timer that called startDelivery(), slept for a few > >>>>seconds, and then called stopDelivery(). > >>>> > >>>>All seemed to work okay at first. When I did some minor queue thrash > >>>>testing the problems started. The test involved a message that went to > >>>>the DLQ, was taken out by the started MDB, and put back in the > >>>>originating queue. The originating queue MDB would roll back its > >>>>transaction and go back into the DLQ. The cycle of moving a message > >>>> > >>>> > >>>>from the DLQ to original queue and back to DLQ might occur several times > >>> > >>> > >>>>in the few seconds the monitor MDB is turned on. > >>>> > >>>>The results for the the first few times the monitor ran were as expected > >>>>(thrashing between queues). After some number (varies) of monitor > >>>>stop/starts the message disappeared. Sometimes after redeploying the > >>>>ear containing the MDBs and monitor the message would reappear on the > >>>>DLQ and the cycle would start again. Sometimes it was gone for good. > >>>> > >>>>Am I using stopDelivery()/startDelivery() correctly? I also tried using > >>>>start()/stop() with the same results. Is there something else I need to > >>>>be doing? Is this a bug? > >>>> > >>>>TIA, > >>>>Bruce > >>>> > >>>> > >>>> > >>>> > >>>>------------------------------------------------------- > >>>>This sf.net email is sponsored by:ThinkGeek > >>>>Welcome to geek heaven. > >>>>http://thinkgeek.com/sf > >>>>_______________________________________________ > >>>>JBoss-user mailing list > >>>>JBo...@li... > >>>>https://lists.sourceforge.net/lists/listinfo/jboss-user > >>>> > >>>> > >>>> > >>>> > >> > >> > >>------------------------------------------------------- > >>This sf.net email is sponsored by:ThinkGeek > >>Welcome to geek heaven. > >>http://thinkgeek.com/sf > >>_______________________________________________ > >>JBoss-user mailing list > >>JBo...@li... > >>https://lists.sourceforge.net/lists/listinfo/jboss-user > >> > >> > > > > > ------------------------------------------------------- > This sf.net email is sponsored by:ThinkGeek > Welcome to geek heaven. > http://thinkgeek.com/sf > _______________________________________________ > JBoss-user mailing list > JBo...@li... > https://lists.sourceforge.net/lists/listinfo/jboss-user -- xxxxxxxxxxxxxxxxxxxxxxxx Adrian Brock Director of Support Back Office JBoss Group, LLC xxxxxxxxxxxxxxxxxxxxxxxx |