[rabbitmq-discuss] Pika IOLoop issue

[Marek Majkowski]

Hi,

On Thu, Oct 20, 2011 at 17:11, E Hope-Morley <zedhm at yahoo.co.uk> wrote:
> Hi Gavin, I do not have a trace and this is not an easy issue to trigger but
> I think I have understood what is going on. This issue happens, in my case,
> when the connection drops and Pika handles the error. This results in the
> on_connection_closed callback getting called which I have instructed to stop
> the connection.ioloop. I think the problem is that if you have a nested
> poll()s you end up with nested handlers so even if the poller (i.e. the
> while loop in poller.start()) is stopped, when the call stack unwinds you
> can end up with calls to poll() getting executed as a result of a
> transport.rpc(). Does this make any sense?

That sounds like a genuine bug report. Fancy filing a bug on pika
issue tracker?
https://github.com/pika/pika/issues

Or maybe even submit a patch?

Cheers,
   Marek



> ________________________________
> From: Gavin M. Roy <gmr at myyearbook.com>
> To: E Hope-Morley <zedhm at yahoo.co.uk>
> Cc: "rabbitmq-discuss at lists.rabbitmq.com"
> <rabbitmq-discuss at lists.rabbitmq.com>
> Sent: Thursday, 20 October 2011, 14:29
> Subject: Re: [rabbitmq-discuss] Pika IOLoop issue
>
> That is peculiar. What is the duration of time between the stop and pending
> event? Is an exception being thrown? Do you have a traceback?
> Gavin
>
> On Thursday, October 20, 2011 at 12:55 PM, E Hope-Morley wrote:
>
> Hi,
>     I am using Pika on Ubuntu 11.04. When I call
> SelectConnection.ioloop.stop() following a connection drop on my connection,
> it sometimes fails to actually stop the ioloop i.e. following the call to
> stop(), a callback may sometimes be called in response to a pending event.
> Any ideas?
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