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From "Daniel Bram (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (AMQ-1265) client setMessageListener for queue hangs when one queue contains 50+ messages and after broker restart setMessageListener calls for 4 queue are called
Date Fri, 08 Jun 2007 14:49:34 GMT

     [ https://issues.apache.org/activemq/browse/AMQ-1265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daniel Bram resolved AMQ-1265.
------------------------------

    Resolution: Cannot Reproduce

lock on client applciation while consuming another queue's messages introduced problem

> client setMessageListener for queue hangs when one queue contains 50+ messages and after
broker restart setMessageListener calls for 4 queue are called
> -------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: AMQ-1265
>                 URL: https://issues.apache.org/activemq/browse/AMQ-1265
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: JMS client, Transport
>    Affects Versions: 4.0.1, 4.0.2, 4.1.1
>         Environment: 4 queues:
> SMF.OUT
> ID.OUT
> MD.OUT
> MKLIST.OUT
> client side: 
> Solaris - SunOS hostname 5.10 Generic_118833-33 sun4u sparc SUNW,Sun-Fire-V215
> java version:
> java version "1.5.0_11"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_11-b03)
> Java HotSpot(TM) Server VM (build 1.5.0_11-b03, mixed mode)
> server: tested with same as client and windows XP SP2
> java version "1.5.0_11"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_11-b03)
> Java HotSpot(TM) Client VM (build 1.5.0_11-b03, mixed mode)
> both client and server: ActiveMQ version 4.0.1 - 4.0.2 - 4.1.1
>            Reporter: Daniel Bram
>
> A JMS client connections hangs when subscribing to queue that is filled with a small
number of messages: 50+.
> The messages have been produced before shutting down the message broker (bin\activemq.bat
process), at that time the queue consumer was not connected.
> Subscribing to 4 queues produces the problem.  When the queue is cleared, the problem
goes away (by subscribing to only one queue for example).
> ActiveMQMessageConsumer.setMessageListener
> freezes on line 329
> session.stop();
> IntelliJ debug screen: (at the next step the wait statement freezes the client connection).
> pool-1-thread-1@10f, priority=5, in group 'main', status: 'RUNNING'
> 	  shutdown():87, PooledTaskRunner.java
> 	  stop():113, ActiveMQSessionExecutor.java
> 	  stop():1469, ActiveMQSession.java
> 	  setMessageListener():329, ActiveMQMessageConsumer.java
> 	  registerHandler():112, AbstractJMSMessagingServiceImpl.java
> 	  registerHandlerByAlias():134, ActiveMQMessagingServiceImpl.java
> 	  initMessagingHandler():412, AdapterDeployer.java
> 	  initAdapterHandlers():341, AdapterDeployer.java
> 	  run():139, AdapterDeployer.java
> 	  call():442, Executors.java
> 	  run():176, FutureTask.java
> 	  access$101():138, ScheduledThreadPoolExecutor.java
> 	  run():237, ScheduledThreadPoolExecutor.java
> 	  runWorker():987, ThreadPoolExecutor.java
> 	  run():528, ThreadPoolExecutor.java
> 	  run():595, Thread.java
> When watching the debug session, the boolean variable "iterating" is set to true in PooledTaskRunner.java
for the blocking setMessageListener call.  The other non blocking setMessageListeners have
their iteration boolean set to false.  Does the fact that one queue contains message set this
to true maybe ?

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