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From Timothy Bish <>
Subject Re: JMSPriority implemented in AMQ 5.4.1?
Date Thu, 23 Dec 2010 17:37:55 GMT
On Thu, 2010-12-23 at 09:22 -0800, rliguori wrote:
> "I think this part of the spec is terrible." 
> >> It does leave a lot to be desired.
> "It is so vague you can do nothing to order by priority and still claim
> compliance. "
> >>I agree it is vague, but my interpretation is that "something" must be
> implemented.  Examine this statement, "it should do its best to deliver
> expedited messages ahead of normal messages".  I would hope that the JMS
> implementers would interpret this as some type of algorithm must be in place
> to expedite messages with higher priority, and if there isn't one then the
> implementation is not meeting compliancy. That is, if nothing is done, then
> the implementation is NOT doing its best to deliver expedited messages ahead
> of normal messages, as no attempt was made.

Message Priority Support was added in ActiveMQ 5.4.2.  If your messages
are all arriving with priority 4 then your producer is sending them with
that priority as that's the default JMS defined value.  Did you set the
priority on the MessageProducer ?


Tim Bish
Twitter: tabish121

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