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From Dan Tran <dant...@gmail.com>
Subject send hangs using vm://
Date Thu, 02 Jul 2009 05:33:02 GMT


Hello, I have an embedded AMQ with 2 clients using vm:// and tcp://
respectively.  The tcp://client mostly used to send lots of messages to the
vm:// client.  The vm://client periodically sends control massages to tcp://
client.

The issue I am facing right now is the send operation from vm:// client
hangs indefinitely when the broker in is under stress processing messaging
sending from tcp:// client. It continues to hang when I stop the tcp://
client and all of its messages are consumed. 

here is the stack trace

Daemon Thread [Thread-14] (Suspended)
Unsafe.park(boolean, long) line: not available [native method]
LockSupport.park(Object) line: 158
AbstractQueuedSynchronizer$ConditionObject.await() line: 1925
ArrayBlockingQueue<E>.take() line: 317
FutureResponse.getResult() line: 40
ResponseCorrelator.request(Object) line: 80
ActiveMQConnection.syncSendPacket(Command) line: 1233
ActiveMQSession.send(ActiveMQMessageProducer, ActiveMQDestination, Message,
int, int, long, MemoryUsage, int) line: 1659
ActiveMQMessageProducer.send(Destination, Message, int, int, long) line: 227
ActiveMQMessageProducer(ActiveMQMessageProducerSupport).send(Message) line:
241
JmsTemplate.doSend(MessageProducer, Message) line: 597
JmsTemplate.doSend(Session, Destination, MessageCreator) line: 574
JmsTemplate$4.doInJms(Session) line: 551
JmsTemplate.execute(SessionCallback, boolean) line: 471
JmsTemplate.send(String, MessageCreator) line: 548
OracleSGAAgentProxy(AbstractAsyncAgentProxy).sendMessageToAgent(String)
line: 92
OracleSGAAgentProxy(AbstractAsyncAgentProxy).pingAgent() line: 147 

My configuration is a typical default settings.

is there a work around?  is there a way for me to set some timeout at
ArrayBlockingQueue<E>.take() ??

This post also is at https://issues.apache.org/activemq/browse/AMQ-1375

sorry about the noise 

Any help is greatly appreciated.


-Dan
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