I've got a fairly complex app, that takes msgs, processing them and sticks them on the same or different queues.
The queues are pre-loaded with persistent messages before the application starts (50000). Once it starts processing things work fine for a while and then the consumers stop receiving any messages. I have a 4 consumers for each queue, and there are 3 different queues. Looking at jconsole all consumes are waiting here: State: WAITING on java.lang.obj...@1801d4a Total blocked: 20 Total waited: 158 Stack trace: java.lang.Object.wait(Native Method) java.lang.Object.wait(Object.java:485) org.apache.activemq.MessageDispatchChannel.dequeue(MessageDispatchChannel.java:75) org.apache.activemq.ActiveMQMessageConsumer.dequeue(ActiveMQMessageConsumer.java:412) org.apache.activemq.ActiveMQMessageConsumer.receiveNoWait(ActiveMQMessageConsumer.java:560) com.xalert.server.queuing.SessionManager.getAlert(SessionManager.java:236) If I look at the broker (and I'm not really sure what to look at here), the thread for my queue that should be dispatching messages looks like this Name: QueueThread:queue://csPIQ State: WAITING on java.util.concurrent.locks.abstractqueuedsynchronizer$conditionobj...@b0a518 Total blocked: 2,365 Total waited: 6,717 Stack trace: sun.misc.Unsafe.park(Native Method) java.util.concurrent.locks.LockSupport.park(Unknown Source) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source) java.util.concurrent.LinkedBlockingQueue.take(Unknown Source) java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source) java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) java.lang.Thread.run(Unknown Source) The broker is configured with producerFlowControl="false", using TCP, a pre-fetch size of 0 and I've also set sendFailIfNoSpace="true". Any ideas on what my problem is or how/where I look in ActiveMQ to find the cause, or if the problem is with the consumer. TIA Ian -- View this message in context: http://www.nabble.com/Q-Consumers-stop-receiving-messages-tp21438163p21438163.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
