[rabbitmq-discuss] RabbitMQ Management shows messages and no queues

Simon MacMullen simon at rabbitmq.com
Thu May 3 11:55:40 BST 2012

On 01/05/12 16:07, Michael Cumings wrote:
> I'm betting there's a simple answer that I can't find in google.
> The Management Overview was showing 100 messages ready.  The Queues tab
> had no queues.  In both, I was showing all vhosts.  Command line
> rabbitmqctl list_queues also returned no queues.  I reset one of the
> servers and the number of messages went down.  I went through and reset
> all three servers in the cluster and they all disappeared.  This
> happened in a development environment where there had been no use for
> over 12 hours, but there were still 3 connections open.  I'm using
> version 2.8.1 installed directly from the deb on the RabbitMQ repo.
> What can cause this to happen?  Where were those messages?  Is there a
> way for me view and interact with messages in that state?

Hmm, this is a weird one. The overview code is really simple: it gets a 
list of all queues, retrieves message statistics for them, and then sums 
them. It really should not be able to count messages if there are no queues.

I wonder whether this was a caching issue at the HTTP level or something.

Of course, if you have a way to reproduce this I'm anxious to hear of it.

Cheers, Simon

Simon MacMullen
RabbitMQ, VMware

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