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From Lionel van den Berg <lion...@gmail.com>
Subject Re: Message appears to be sent but not received
Date Mon, 09 Apr 2018 00:57:55 GMT
Good news, it’s our bug. We have some logic that is automatically cleaning
up inactive consumers, that logic was supposed to be turned off.


On Mon, 9 Apr 2018 at 12:39 am, Tim Bain <tbain98@gmail.com> wrote:

> 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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