Is there a clear explanation anywhere of exactly what Broker federation
offers without corosync?  If I can meet my requirements by fixing this, and
the scope of work is within an order of magnitude of rolling my own load
balancing, I'd rather fix Qpid.  I looked at it once, and it was in some
overly clever and difficult to follow code, so I stopped, but I've spent a
lot of time in the broker and low level Windows transport layers fixing
other bugs, as has another senior member of my team...


On Fri, Jun 21, 2013 at 5:25 AM, Gordon Sim <[email protected]> wrote:

> On 06/17/2013 07:31 PM, Steve Huston wrote:
>
>> And anything you can think of for dynamically load balancing across
>>>>
>>> brokers?
>>>
>>> Honestly, I think the simplest solution overall is for us to get
>>> federation
>>> working on windows. I assume its some issue in the IO layer.
>>> Does anyone have a concrete understanding of what the problem is and
>>> what is required to fix it?
>>>
>>> Any volunteers from our windows experts to take a look (Cliff, Chuck,
>>> Andrew, Steve)?
>>>
>>
>> https://issues.apache.org/**jira/browse/QPID-2199<https://issues.apache.org/jira/browse/QPID-2199>
>>
>> It is likely not a very complicated issue once it's understood more.
>> Getting the time/funding to do it has been the only impediment.
>>
>
> A view was expressed that this was because the AsynchConnector for windows
> was not in fact asynchronous. I'm a little sceptical of that, though I
> admit I haven't looked into the issue at all.
>
> The underlying socket is reported to be established. As Ted suggests in
> his comment, perhaps that the link registry has not been notified or was
> unable to match the notification to the pending link.
>
> The connection id and federation link matching was very fragile in earlier
> versions (and seems now to be a little more robust). For example
> https://issues.apache.org/**jira/browse/QPID-4315<https://issues.apache.org/jira/browse/QPID-4315>,
> where SSL federation broke if hostnames were used qith qpid-route.
>
> Could a similar issue be (or have been) behind the windows problem?
>
> Has anyone tried with a recent broker? E.g. 0.22 or trunk? There have been
> quite a few changes in the codepaths involved.
>
>
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