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Posted to dev@activemq.apache.org by "Timothy Bish (JIRA)" <ji...@apache.org> on 2012/10/28 19:59:12 UTC
[jira] [Resolved] (AMQ-3746) Non Durable Topic subscription with
prefetch=0, MessageConsumer.receivenowait() (or
MessageConsumer.receive(timeout) hangs indefinitely
[ https://issues.apache.org/jira/browse/AMQ-3746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Timothy Bish resolved AMQ-3746.
-------------------------------
Resolution: Fixed
Fixed on trunk
> 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
> Assignee: Timothy Bish
> Priority: Minor
> Fix For: 5.8.0
>
> Attachments: AMQ-3746.txt, APotentialFixForAMQ-3746.patch, TopicSubscriptionZeroPrefetchTest.patch
>
>
> 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 *NOT* exhibit this behavior.
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