On Thu, Apr 16, 2015 at 8:34 PM, Tim Bain <tb...@alumni.duke.edu> wrote:
> If that was happening you'd see the DestinationViewMBean's ExpiredCount > increasing in the JMX counters, but only if the expiration was happening on > the broker; as far as I could tell, there's no stat that captures when > messages expire while they're in the client's prefetch buffer. (But that's > just from empirical observation, not code inspection, so I could be wrong > about that.) > > Yes. I don’t see that. It’s still set to zero. The weird thing is that nothing in JMX really seems odd. The only behavior I see is that some of my queues grow somewhat large, and then I don’t receive any messages from them. If I do this from an external process, I can receive messages. Just not in my main daemon. The messages have been stuck there for DAYs now. I would expect at least *some* of them to be occasionally executed. This is with multiple restarts of my daemon. And I can see that my code is calling receiveNoWait, it’s just that they never get an answer. > If you're not seeing DLQ buildup, then that rules out the possibility of > messages aging off on the broker (as long as you haven't disabled DLQing of > expired messages via the processExpired property on > sharedDeadLetterStrategy). I'm not sure if it rules out the possibility of > them aging off on the client; I'm not sure if messages get DLQ'ed in that > situation or simply discarded silently. We don't use the DLQ at all, so I > don't have any empirical observations to work from, but maybe someone else > on the list would know that answer... But even if it's possible, it > certainly sounds like a bit of a long shot for explaining what you're > seeing. > Yes. We have the DLQ on and find it valuable. But I’m not seeing any message accumulating there. I am going to test out using NIO to see if that fixes things. I was thinking it might be a bug with servicing the queue. It’s worth a shot at least. > While this problem is going on, what are you seeing in JMX? Which stats > are increasing, which ones aren't, which ones are going up slower than the > message count, etc.? > That’s just the thing, I don’t see any of the JMX stats changing. There are consumers on the queue I see them. But nothing really stands out. I’m also going to try to increase the initial redelivery time on a hunch.. They’re not DLQing but maybe they’re just expiring automatically like you said. It’s worth a shot. -- Founder/CEO Spinn3r.com Location: *San Francisco, CA* blog: http://burtonator.wordpress.com … or check out my Google+ profile <https://plus.google.com/102718274791889610666/posts> <http://spinn3r.com>
