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From Bruce Snyder <bruce.sny...@gmail.com>
Subject Re: Workaround for messages stuck in a queue
Date Wed, 10 Mar 2010 15:05:43 GMT
On Tue, Mar 9, 2010 at 11:27 AM, Jamie McCrindle
<jamiemccrindle@gmail.com> wrote:
> Hi,
>
> It appears we may be getting by this
> https://issues.apache.org/activemq/browse/AMQ-2009 or some variant of
> it i.e. messages are getting stuck in a queue. We are busy looking at
> our config and gradually making changes to try and resolve it but we
> can't replicate in dev so it's slow going. We're using ActiveMQ 5.2.0
> in a network of brokers.
>
> Once a number of messages are stuck on a queue, we're using a couple
> of workarounds to get them resuscitated:
>
> Bounce the brokers. This usually gets reinvigorates about 50% of them.
> The rest become immune.
> Copy the messages off the queue using a query browser, purge the
> original queue and resubmit the messages. This works but there's a
> real danger of losing a message that arrived in the interim.
> Keep doing the above until none of the messages are stuck.
>
> It would be great if there was a way, from the WebConsole, to shake
> the messages awake, btw.
>
> Anyone else faced with a similar problem? How have you solved it? Our
> latest configuration change attempt is to reduce the prefetch down to
> 1 for all of our consumers.

When I have seen this behavior I have recommended an upgrade to
ActiveMQ 5.3. There were some fixes in 5.2 and 5.3 for this problem,
but I have not seen it rear it's head where ActiveMQ 5.3 is being
used.

Bruce
-- 
perl -e 'print unpack("u30","D0G)U8V4\@4VYY9&5R\"F)R=6-E+G-N>61E<D\!G;6%I;\"YC;VT*"
);'

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Blog: http://bruceblog.org/
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