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From Matt Lachman <>
Subject Re: Queue messages not dequeuing
Date Thu, 23 Feb 2012 14:54:39 GMT
Hi Jakub,

Yes, from the queue on the broker. As far as the broker is concerned, it
remains "in-flight" permanently. What's weirder is when I run a standalone
java client to consume the messages, it has no trouble whatsoever. So I
think there's something going on in the client side that's causing messages
not to be acknowledged.

I have a manager class that is responsible for consuming & publishing to
the topic. The same manager class is responsible for consuming messages
from the queue. I have two nested listener classes which are instantiated
as member variables of the manager class in the constructor.

I don't necessarily care about sequence; more that there is only ever one
message for a given id being processed at any given moment. Would message
groups still apply?


On Thu, Feb 23, 2012 at 9:41 AM, Jakub Korab <> wrote:

> Hi Matt,
> When you say that the message is not being dequeued, do you mean from the
> queue on the broker?
> The overall scheme itself seems to be pretty complicated; where are the
> topic messages coming from?
> If you are trying to ensure that messages for a particular id are consumed
> in sequence then perhaps message groups
> ( might fit the bill better
> and simplify your code.
> Jakub

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