[Koha-bugs] [Bug 32481] Rabbit times out when too many jobs are queued and the response takes too long

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=32481

--- Comment #12 from Nick Clemens <nick at bywatersolutions.com> ---
(In reply to David Cook from comment #4)
> (In reply to Nick Clemens from comment #0)
> > We saw this happen several times - a library would queue up 6 batch
> > modifications that would take roughly 6 minutes each.
> 
> Is that 1 job for 6 items, or is that 6 different jobs? Why were the jobs
> taking 6 minutes?

6 batch jobs of several hundred items, submitted one after the other

> 
> > The jobs would process normally, until the 30 minute configured timeout
> > would hit - then the remaining job would fail, and rabbit would disconnect
> > and not reconnect, and jobs would pile up
> 
> When you say "rabbit would disconnect and not reconnect", are you talking
> about the RabbitMQ server disconnecting, and then not allowing the
> koha-worker to reconnect? 

Rabbit crashed for all intents and purposes - koha worker could not connect,
only a restart would beign to process jobs again

> 
> > It seems that koha receives all of the jobs immediately, but only
> > acknowledges when complete - so the final job was waiting over 30 minutes
> > for acknowledgement and this caused issues
> 
> What do you mean by "koha"? Do you mean "koha-worker"? I think we need more
> information here.

Yes, the koha-worker - it seems to get the frame, but not send an ack

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