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From Waves <>
Subject Use jencks to async receive message, there are always some messages are left in the queue
Date Fri, 26 Jan 2007 01:55:39 GMT

(1)Environment: use Activemq and Spring to send message, use Activemq and
Jencks to receive message asynchronously. We use jconsole to monitor.
    We use non-persistent queue to send message asynchronously, use jencks
to receive message asynchronously, jencks use multiple-session and
consumer’s prefetch.
    Every time we find that there are always some messages non-delivered in
the queue, like "jconsole_information.doc".We have read the Activemq code,
find that only when client send "ACK" to broker ,the broke will deal with
the message in the queue and the "DequeueCount" in JMX will be updated. So I
suspect that the consumer don't send "ACK" message to the broker, so the
last messages don't be delivered from broker to client.
(2)The attachment file is our client configuration file.
(3)The attachment image is jconsole's JMX information.
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