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From Tim Bain <tbai...@gmail.com>
Subject Re: Message appears to be sent but not received
Date Sun, 08 Apr 2018 14:39:25 GMT
The number of producers and the message volume should both be irrelevant.
Though of course if there's a bug, all bets are off.

On Apr 8, 2018 5:53 AM, "Lionel van den Berg" <lionelv@gmail.com> wrote:

I’m going to try to get someone to try your suggestions at site tomorrow.

Regarding your question, yes, the subscriber is a server that is started
before the producers and never restarted. Does it matter that there are
multiple producers to the topic. Also it’s a very low volume topic, there
is lots of data on other topics on the same connection.




On Sun, 8 Apr 2018 at 1:43 am, Tim Bain <tbain@alumni.duke.edu> wrote:

> 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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