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From: Rob Davies <rajdavies@gmail.com>
To: users@activemq.apache.org
In-Reply-To: <24887648.post@talk.nabble.com>
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Subject: Re: How to tell if everything in a queue has been processed
Date: Sun, 9 Aug 2009 17:34:00 +0100
References: <24887648.post@talk.nabble.com>


On 9 Aug 2009, at 15:32, amp834 wrote:

>
> I'm using ActiveMQ to "Submit a job" to queue "Job53" (a queue for  
> each job),
> with (say) 500 subtasks, and want to know when the 500 items have been
> processed completely.  I thought of creating a queue just for that  
> job,
> writing 500 messages to it, and when the 500 messages have been  
> processed,
> the job is done.
>
> Is there a way to tell if a queue is empty?  (no messages in the  
> queue, no
> messages that a consumer has taken but has not finished processing)?
>
> I found an old post, but it's so old that I thought I'd ask the  
> question
> again.
> http://www.nabble.com/Query-the-number-of-messages-from-a-Queue-to3652780.html#a3653404
>
> -- 
> View this message in context: http://www.nabble.com/How-to-tell-if-everything-in-a-queue-has-been-processed-tp24887648p24887648.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>


You can either use JMX - as the old post suggested - or enable message  
consumed advisory - to get informed out when a message has been  
consumed from the queue - see http://activemq.apache.org/advisory-message.html

cheers,

Rob

Rob Davies
I work here: http://fusesource.com
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