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From Wilson Luong <wilson_lu...@hotmail.com>
Subject ActiveMQ 5.0.0 AMQ Message Store fails when using with Spring DefaultMessageListenerContainer with more than 1 concurrentConsumers to dispatch JMS messages from Queue
Date Mon, 14 Jan 2008 16:49:06 GMT

Hi,

I am seeing a problem in using ActiveMQ5.0.0 (AMQ Message Store) with
Spring's DefaultMessageListenerContainer. Whenever I set the
DefaultMessageListenerContainer currentConsumer value to more than 1 (i.e.
multiple concurrent consumers), it causes activeMQ broker to produce error
shown below: 

ERROR RecoveryListenerAdapter - Message id xxxxxx could not be recovered
from the data store!

After this point, no further messages will be dispatched from the ActiveMQ
JMS queue, and new messages send to the JMS queue seems to disappear and are
not logged into the persistence store. The error seem to indicate problem
with the persistence store. I am making use of the new activemq5.0.0 AMQ
Message Store.

I have included a test program (packaged in TestCase.zip) that will
re-produce the issue. The testcase contains the following content:

* activemq.xml : contains the config to start the ActiveMQ broker used by
the test program. It contains a basic stripped down configuration (using
default config settings on AMQ Message Store). 

* JmsQueueSender.java : util class making use of Spring's JmsTemplate to
send JMS messages. 

* ActiveMQTestClass.java : main class that needs to be started. It loads the
sender class via spring, and also starts up the Spring's
DefaultMessageListenerContainer to dispatch messages. It will use the sender
class JmsQueueSender to send 100 messages every 10sec. 

* DefaultMessageListener.java : JMS Pojo class that will be called to handle
the messages dispatched from the configured Spring's
DefaultMessageListenerContainer class. It currently just prints the message
content and sleeps for 200 millisec. The sleep is intentional, as it
simulate the time it takes in our real application to process the message
content. It also somehow (along with the printing of the message content)
seem to make the error/program to occur more quickly. 

* testSpring.xml : Spring configuration used by the test program. One main
thing to note is the 
DefaultMessageListenerContainer class is configured with 10
concurrentConsumers. When setting this value to 1, the problem doesn't seem
to happen, but as soon as this value is set beyond 1, it causes problem in
the ActiveMQ broker, relating to problem in unable to recover from
datastore. 

I have included the ActiveMQ broker logfile (activemq.log) which has debug
turned on (to provide more info). As soon as the error shown below is
logged, the consumer is unable to dispatch any more messages from the
ActiveMQ queue. The errors reported are:

2008-01-10 16:37:24,474 [/127.0.0.1:3432] ERROR RecoveryListenerAdapter -
Message id ID:B00118579B7DA-3430-1199983032693-0:1:1:1:99 could not be
recovered from the data store!

2008-01-10 16:37:24,474 [/127.0.0.1:3432] ERROR RecoveryListenerAdapter -
Message id ID:B00118579B7DA-3430-1199983032693-0:1:1:1:99 could not be
recovered from the data store!

2008-01-10 16:37:24,474 [/127.0.0.1:3432] ERROR RecoveryListenerAdapter -
Message id ID:B00118579B7DA-3430-1199983032693-0:1:1:1:99 could not be
recovered from the data store!

The error doesn't seem to happen at predictable fixed points, which is why
the test program will send 100 message every 10sec, and over a number of
iterations, it will eventually show the problem in the broker.

Anyone know what could be causing this or have experienced the same problem?
I would really like to get the Spring concurrent consumer to dispatch the
messages, in order to reduce the time it takes to process multiple burst of
messages.

Any help would be great. Thanks

http://www.nabble.com/file/p14805901/activemq.log activemq.log 
http://www.nabble.com/file/p14805901/TestCase.zip TestCase.zip 
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