[rabbitmq-discuss] problem on queue depth checking?

Tue Mar 13 16:13:55 GMT 2012

Make sure autoack is set to false.

From Jose's iPhone

On Mar 13, 2012, at 6:47 AM, sameekmishra <sameek at arosys.com> wrote:

> 
> Defining the channel.basicQos(1) consumer will pick one message and do not
> pick any message from queue until it not got acknowledgement,if u think that
> consumer will consume all message from queue that's because I got queue
> depth zero but This may not be the case as.
> 
> What i am thinking is that we need to define channel.basicQos(1) only in the
> consumer code not in queueDepth because it only give the total count of
> message.
> 
> Even after defining the channel.basicQos(1) on consumer end, I am getting
> queuedepth value 0,which should be one. may other reason behind that i am
> getting wrong result.
> 
> Thanks
> Sameek
> 
> 
> Simon MacMullen-2 wrote:
>> 
>> On 13/03/12 13:01, sameekmishra wrote:
>>> Now if i publish 2 messages then one message will be consumed(and thread
>>> will sleep for one minute) and one will be in the queue;
>>> And queue depth checking thread must show the queuedepth = 1. But I am
>>> getting the queuedepth 0.
>>> But if we dont consume the message from queue then queuedepth is shown
>>> correctly.
>> 
>> RabbitMQ will by default push as many messages to the consumer as it 
>> can. On the consumer side they end up buffered in the QueueingConsumer.
>> 
>> To change this behaviour, invoke channel.basicQos() and use acks. This 
>> will bound the number of unacknowledged messages RabbitMQ will push to 
>> your consumer.
>> 
>> Cheers, Simon
>> 
>> -- 
>> Simon MacMullen
>> RabbitMQ, VMware
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>> 
>> 
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