STOMP - Client Individual Ack

[Christopher Pisz <ch...@gmail.com>]

What is the expected behavior from Artemis if I
* Connect to Artemis using the STOMP protocol
* Subscribe to a queue specifying Client-Individual as my Ack mode
* Receive a message from the queue to which I subscribed
* Never send an Ack for it?

Re: STOMP - Client Individual Ack

[Justin Bertram <jb...@apache.org>]

> Is there no way for me to limit the amount of time it can sit in
delivery, without the client closing?

Sure there is. Just configure slow-consumer detection as described in the
documentation [1].

I apologize if I misunderstood, but it didn't appear that you were asking
about how the broker could deal with such "slow" consumers previously.


Justin

[1]
http://activemq.apache.org/components/artemis/documentation/latest/slow-consumers.html

On Wed, Aug 26, 2020 at 4:27 PM Christopher Pisz <ch...@gmail.com>
wrote:

> Is there no way for me to limit the amount of time it can sit in delivery,
> without the client closing?
> i.e What if the client receives messages but its processing threads are
> hung?
>
> On Wed, Aug 26, 2020 at 4:10 PM Justin Bertram <jb...@apache.org>
> wrote:
>
> > In this situation (where a message has been dispatched to a client but
> the
> > client has not yet acknowledged that message) the broker will mark that
> > message as being "in delivery." You can see this in the admin console,
> for
> > example, by looking at the "Delivering Count" of the queue in question.
> The
> > message won't be available to other consumers, but it also won't be
> removed
> > completely from the queue. Once the consumer or the connection is closed
> > then any messages in this state will be fully restored to the queue for
> > other consumers to receive.
> >
> >
> > Justin
> >
> > On Wed, Aug 26, 2020 at 2:57 PM Christopher Pisz <
> > christopherpisz@gmail.com>
> > wrote:
> >
> > > What is the expected behavior from Artemis if I
> > > * Connect to Artemis using the STOMP protocol
> > > * Subscribe to a queue specifying Client-Individual as my Ack mode
> > > * Receive a message from the queue to which I subscribed
> > > * Never send an Ack for it?
> > >
> >
>

Re: STOMP - Client Individual Ack

[Christopher Pisz <ch...@gmail.com>]

Is there no way for me to limit the amount of time it can sit in delivery,
without the client closing?
i.e What if the client receives messages but its processing threads are
hung?

On Wed, Aug 26, 2020 at 4:10 PM Justin Bertram <jb...@apache.org> wrote:

> In this situation (where a message has been dispatched to a client but the
> client has not yet acknowledged that message) the broker will mark that
> message as being "in delivery." You can see this in the admin console, for
> example, by looking at the "Delivering Count" of the queue in question. The
> message won't be available to other consumers, but it also won't be removed
> completely from the queue. Once the consumer or the connection is closed
> then any messages in this state will be fully restored to the queue for
> other consumers to receive.
>
>
> Justin
>
> On Wed, Aug 26, 2020 at 2:57 PM Christopher Pisz <
> christopherpisz@gmail.com>
> wrote:
>
> > What is the expected behavior from Artemis if I
> > * Connect to Artemis using the STOMP protocol
> > * Subscribe to a queue specifying Client-Individual as my Ack mode
> > * Receive a message from the queue to which I subscribed
> > * Never send an Ack for it?
> >
>

Re: STOMP - Client Individual Ack

[Justin Bertram <jb...@apache.org>]

In this situation (where a message has been dispatched to a client but the
client has not yet acknowledged that message) the broker will mark that
message as being "in delivery." You can see this in the admin console, for
example, by looking at the "Delivering Count" of the queue in question. The
message won't be available to other consumers, but it also won't be removed
completely from the queue. Once the consumer or the connection is closed
then any messages in this state will be fully restored to the queue for
other consumers to receive.


Justin

On Wed, Aug 26, 2020 at 2:57 PM Christopher Pisz <ch...@gmail.com>
wrote:

> What is the expected behavior from Artemis if I
> * Connect to Artemis using the STOMP protocol
> * Subscribe to a queue specifying Client-Individual as my Ack mode
> * Receive a message from the queue to which I subscribed
> * Never send an Ack for it?
>