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From Christian Posta <christian.po...@gmail.com>
Subject Re: persistent message missing to a durable subscriber when it reconnects(restarts)
Date Wed, 27 Mar 2013 17:05:45 GMT
Can you please raise a JIRA for this? Looks like a bug of some sort


On Tue, Mar 26, 2013 at 11:01 PM, Jaewoong Choi <jaewoong.choi@ymail.com>wrote:

> Hi Tim,
>
> Thanks for the point, with activemq-all-5.9-SNAPSHOT I was able to run my
> test.  Bad news it that it's still failing with the same "message missing"
> trouble.  Here is a line of logs as the evidence that I ran the test with
> 5.9-SNAPSHOT correctly:
>
> -----
> 21:58:32,643 INFO  [BrokerService] Apache ActiveMQ 5.9-SNAPSHOT
> (broker-tcp:__weehomespent-lm:61616,
> ID:weehomespent-lm-63775-1364360312513-0:1) started
> -----
>
> This looks simply critical as it's violating one of primitive messaging
> functions: "no message missing" whereas the trouble is relatively easy to
> reproduce, so I wonder how the problem hasn't been reported so far so long
> if this is a bug.
>
> The test scenario is quite simple, let me repeat just once more:
>
> 1. Instantiate broker service using activemq embedded broker.  Every
> configuration is by default except for the persistent flag.  Set persistent
> to false for the broker: BrokerService#setPersistent(false).
>
> 2. With JMS API, create 1 producer and 1 durable subscriber on different
> connections then start them in parallel.
>
> 3. Producer sends 100 messages (sleeps 1ms between sending) to the topic.
> Uses DeliveryMode.PERSISTENT, Message.DEFAULT_PRIORITY and
> Message.DEFAULT_TIME_TO_LIVE for the arguments to send method.
>
> 4. Durable subscriber receives 100 messages with Session.AUTO_ACKNOWLEDGE.
> The important scenario is that, *it reconnects every after 2 message
> consumption*.  It does what follows when it reconnects:
> 1) Connection#stop
> 2) TopicSubscriber#close
> 3) Connection#close
> 4) recreate all again: Connection (from ConnectionFactory), then Session,
> then TopicSubscriber.
> 5) Connection#start
> 6) resume receiving with TopicSubscriber...
>
> 5. For 100 message consumption in total with reconnection by every 2
> message
> consumption, the durable subscriber is supposed to reconnect around 50
> times.  The message missing is not always happening but should happen once
> out of ~30 consecutive trials (i.e. problem happened at least once when I
> repeated the test 30 times consecutively, by using TestNG's
> "invocationCount=30" attribute, for example).
>
> It would be really helpful if someone can help reproduce this as well so
> that I can file a bug.
>
> Regards,
>
> Jaewoong
>
>
> tabish121@gmail.com wrote
> > On 03/26/2013 08:49 PM, Jaewoong Choi wrote:
> >> Unfortunately, I couldn't verify if the latest snapshots resolved the
> >> issue I
> >> questioned.  I failed to replace the activemq-core dependency from 5.7.0
> >> to
> >> any upper versions as I ended up facing some runtime errors with the API
> >> I've used with 5.7.0.  It looks like, including "broker/client split"
> >> that
> >> you mentioned, from 5.8.0 the activemq is not that backward compatible
> >> with
> >> 5.7.0 and below versions.
> >
> > You probably didn't include the activemq-kahadb-store jar there's also
> > the activemq-all uber module which will bring in everything.
> >
> >
> > --
> > Tim Bish
> > Sr Software Engineer | RedHat Inc.
>
> > tim.bish@
>
> >  | www.fusesource.com | www.redhat.com
> > skype: tabish121 | twitter: @tabish121
> > blog: http://timbish.blogspot.com/
>
>
>
>
>
> --
> View this message in context:
> http://activemq.2283324.n4.nabble.com/persistent-message-missing-to-a-durable-subscriber-when-it-reconnects-restarts-tp4665130p4665173.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>



-- 
*Christian Posta*
http://www.christianposta.com/blog
twitter: @christianposta

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