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From Tim Bain <tb...@alumni.duke.edu>
Subject Re: Message appears to be sent but not received
Date Sat, 07 Apr 2018 15:43:25 GMT
I'd suggest you use a JMX viewer such as JConsole, and navigate through the
org.apache.activemq MBeans to find the subscription in question. On the
Attributes page under the subscription, you'll see counts for the number of
messages enqueued and dequeued.

If those don't match, it means your messages are not getting delivered to
the subscriber. (Could they be expiring before they can be consumed?)

If they match, but are lower than the number you sent to the topic while
the consumer was subscribed, we'll have to dig deeper.

Also, I understand from your response that these consumers have been
subscribed and connected the entire time the messages were being sent. Is
that what you're saying?

Tim

On Fri, Apr 6, 2018 at 7:11 AM, Lionel van den Berg <lionelv@gmail.com>
wrote:

> Non-durable an using the same connection as other topics that are still
> working. No filters.
>
>
> On Fri, 6 Apr 2018 at 11:03 pm, Tim Bain <tbain@alumni.duke.edu> wrote:
>
> > Are the topic subscriptions durable or non-durable? If the latter, were
> the
> > clients disconnected at the time the messages in question were sent?
> >
> > Also, do the subscribers in question use any selectors?
> >
> > Tim
> >
> > On Fri, Apr 6, 2018, 12:26 AM Lionel van den Berg <lionelv@gmail.com>
> > wrote:
> >
> > > Another kind of vague one. We have found from our application logs at
> > site
> > > that some messages that we are sending appear to be sent OK on one end
> > but
> > > are never received by the subscriber.
> > >
> > > This seems to coincide with topics where the traffic volume is low,
> does
> > > anyone have any pointers on where to look first?
> > >
> >
>

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