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List:       activemq-dev
Subject:    [jira] [Created] (AMQ-3746) Non Durable Topic subscription with prefetch=0, MessageConsumer.receiven
From:       "Pat Fox (Created) (JIRA)" <jira () apache ! org>
Date:       2012-02-29 13:07:57
Message-ID: 16085937.2793.1330520877375.JavaMail.tomcat () hel ! zones ! apache ! org
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Non Durable Topic subscription with prefetch=0, MessageConsumer.receivenowait() (or \
                MessageConsumer.receive(timeout) hangs indefinitely
---------------------------------------------------------------------------------------------------------------------------------------


                 Key: AMQ-3746
                 URL: https://issues.apache.org/jira/browse/AMQ-3746
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.5.1
            Reporter: Pat Fox


Non Durable Topic subscription with prefetch=0, MessageConsumer.receivenowait() (or \
MessageConsumer.receive(timeout) hangs indefinitely.

I get the following thread dump

{code}
"main" prio=5 tid=7f996d000000 nid=0x105bc3000 in Object.wait() [105bc1000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <7f39f1b30> (a java.lang.Object)
	at java.lang.Object.wait(Object.java:485)
	at org.apache.activemq.SimplePriorityMessageDispatchChannel.dequeue(SimplePriorityMessageDispatchChannel.java:87)
                
	- locked <7f39f1b30> (a java.lang.Object)
	at org.apache.activemq.ActiveMQMessageConsumer.dequeue(ActiveMQMessageConsumer.java:468)
  at org.apache.activemq.ActiveMQMessageConsumer.receiveNoWait(ActiveMQMessageConsumer.java:621)
  at org.apache.activemq.usecases.TopicSubscriptionZeroPrefetchTest.testTopicConsumerPrefetchZero(TopicSubscriptionZeroPrefetchTest.java:71)
 {code}

It seems the TopicSubscription does not support "pullMessage".

This only appears to impact Non Durable Topic Subscriptions. Durable Topic \
Subscriptions with prefetch=0 do exhibit this behavior.




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