[rabbitmq-discuss] Exchange.Unknown with Celery

Joey Jiao joey.jiaojg at gmail.com
Fri Apr 18 15:31:38 BST 2014

I use tcpdump to get the amqp protocol packet, which says
'Exchange.Unknown' in INFO field.
In AMQP section, I can see the error message is 'Unknown exchange message
40' or 'Unknown exchange message 51'.
I have searched the celery 3.0.18 which I'm using, only bin/celery.py has
similar error message 'Unknown {0.name} message {1}', which can be trigger
by using command like 'celery amqp exchange.unbind' or 'celery amqp
I haven't found which process to call it, but I'm still checking with other
colleagues using celery.
I'm not at that computer, so cannot share the packet I captured. But the
error I captured is from one broker to another and we are using federation
exchanges and federation queues.

And yes, I have posted the same question to celery-users group.

2014-04-18 19:41 GMT+08:00 Michael Klishin <mklishin at gopivotal.com>:

> On 18 April 2014 at 15:36:42, Joey Jiao (joey.jiaojg at gmail.com) wrote:
> > > I'm using celery as the client. It should also support these
> > two msg_id.
> > but the bin/celery might has the issue which doesn't include
> > exchange.unbind and unbind_ok. Might be better check with them.
> Perhaps Ask (Celery author) can shed some light on what client Celery uses
> and what protocol version it targets.
> Meanwhile, can you post something that explains how you run Celery and
> what the error message looks like?
> --
> MK
> Software Engineer, Pivotal/RabbitMQ

-Joey Jiao
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