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From osian <>
Subject Re: A Question About Message Groups
Date Wed, 06 Dec 2006 14:57:56 GMT


Another question has cropped up, if, lets say, the consumer were to go down
whilst processing a message, does the message it was processing go to the
back of the queue, or remain as the fist to get handed out to the next
consumer that is available?  (the consumers are using auto acknowledge),


James.Strachan wrote:
> On 12/6/06, osian <> wrote:
>> Hi,
>> When using message groups (within 4.1), is there any way of guaranteing
>> the
>> order in which the messages, within a group, are processed by the single
>> consumer? i.e. is there any way of setting a sequence on a message, and
>> ensuring that it is processed in the order of 1,2,3,4 etc, or even 1,2,4
>> (if
>> there is no 3 for a message group within ActiveMQ)?
> The messages are processed in the order in which they are sent to the
> broker; so no need to explicitly number them.
> -- 
> James
> -------

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