[chef-dev] [chef] Re: expander redundancy

[Joseph Holsten < >]

On 2012-04-05, at 15:21, Daniel DeLeo wrote:

> On Wednesday, April 4, 2012 at 6:20 PM, Reichert, Wil wrote:
>> 
>> I'm running chef .10.8 and trying to configure 2 expanders to each pull 
>> messages off rabbit & populate 2 independent solr instances. 
>> 
> I don't think this is possible any longer. As you've seen, expander refuses 
> to operate when there are other consumers on the queues, this is a safety 
> feature to prevent data loss if the cluster somehow gets in a bad state.

Sorry to derail, but are you saying the amqp queues are flagged exclusive, 
and the consumers use a no-ack of false? Wouldn't we get the same safety if 
we switched both of those settings, use durable queues and (possibly) 
messages flagged persistent?
--
josephholsten.com