You weren't kidding about the problem being on an "old version." WildFly 10
was released in 2016 and shipped with ActiveMQ Artemis 1.1.0. There's been
almost 50 releases of ActiveMQ Artemis and around 30 releases of WildFly in
the last 6 years since then.
Things I would check:
- On the queue:
- Number of consumers
- Number of messages
- Number of messages in delivery (this indicates how many messages have
been dispatched to consumers but have not yet been acknowledged)
- On the consumer:
- Thread dump to see if the consumer is stuck for any reason
Justin
On Mon, Sep 26, 2022 at 1:38 PM Thomas, Patrick R <
patrick.r.tho...@questdiagnostics.com> wrote:
> Hello,
>
> I am new to this mailing list. I built at application years ago using
> WildFly 10 and the ActiveMQ that is embedded. Recently, on extremely rare
> occasions, one of our queues slow down. My log files of my application show
> that messages are delayed by anywhere from 5 to 30 minutes. The queue is on
> the same server running under the same WildFly instance. One web app is
> sending another web app a simple message that a file has been received.
> We're using Spring to create and read the messages. There is very little
> code on our part, and it has not changed since the beginning.
>
> To add to the mystery, we have 2 other queues that seem unaffected. One
> queue is virtually the same message being sent back to the previous web
> app. The third queue is a message being sent from the middle app to another
> app, and those messages are much larger but are never delayed.
>
> Usually a reboot clears the issue, but today I did a regular reboot and
> the delay started happening right away, although a smaller delay of only a
> few minutes. Does anyone have any idea how I can troubleshoot this? Could
> there be something wrong with my queue, like corruption? Is there any log I
> can check to be sure the issue is with the queue itself? Any help would be
> greatly appreciated. It may be a bug that was fixed long ago. I won't be
> able to update this application any time soon.
>
> Thank you,
>
> Patrick
>
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