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https://issues.apache.org/jira/browse/AMQ-5297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15137382#comment-15137382
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Tim Kieschnick commented on AMQ-5297:
-------------------------------------
Was this ever resolved or worked around?
> PooledSession with lots of consumers can fail to start fully
> ------------------------------------------------------------
>
> Key: AMQ-5297
> URL: https://issues.apache.org/jira/browse/AMQ-5297
> Project: ActiveMQ
> Issue Type: Bug
> Components: activemq-pool, JMS client
> Affects Versions: 5.8.0
> Environment: java version "1.7.0_51"
> Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
> Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)
> Reporter: Sam hendley
>
> We have a case where we are trying to startup 100s of camel routes and it
> appears to be causing an issue where the consumer is only partially started
> and the thread is stuck waiting for for the consumer to be fully created. The
> consumer appears to be created on the broker side so that it is getting
> messages enqueued and dispatched, just never serviced.
> Could this be due to our connection pool being too small? Could we avoid this
> problem with asyncSend?
> {quote}
> "Camel (AppsJVM) thread #28 - JmsConsumer[response.queue]" - Thread t@318
> java.lang.Thread.State: WAITING
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <ee029ee> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
> at
> java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:374)
> at
> org.apache.activemq.transport.FutureResponse.getResult(FutureResponse.java:40)
> at
> org.apache.activemq.transport.ResponseCorrelator.request(ResponseCorrelator.java:87)
> at
> org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:1380)
> at
> org.apache.activemq.ActiveMQSession.syncSendPacket(ActiveMQSession.java:1912)
> at
> org.apache.activemq.ActiveMQMessageConsumer.<init>(ActiveMQMessageConsumer.java:273)
> at
> org.apache.activemq.ActiveMQSession.createConsumer(ActiveMQSession.java:1144)
> at
> org.apache.activemq.ActiveMQSession.createConsumer(ActiveMQSession.java:1088)
> at
> org.apache.activemq.ActiveMQSession.createConsumer(ActiveMQSession.java:1001)
> at
> org.apache.activemq.pool.PooledSession.createConsumer(PooledSession.java:311)
> at
> org.springframework.jms.listener.AbstractPollingMessageListenerContainer.createConsumer(AbstractPollingMessageListenerContainer.java:503)
> at
> org.springframework.jms.listener.AbstractPollingMessageListenerContainer.createListenerConsumer(AbstractPollingMessageListenerContainer.java:224)
> at
> org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.initResourcesIfNecessary(DefaultMessageListenerContainer.java:1094)
> at
> org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:1070)
> at
> org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:1063)
> at
> org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:960)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
> Locked ownable synchronizers:
> - locked <4deb7015> (a java.util.concurrent.ThreadPoolExecutor$Worker)
> {quote}
> {quote}
> <bean id="JMSPooledConnectionFactory"
> class="org.apache.activemq.pool.PooledConnectionFactory">
> <property name="maxConnections" value="8" />
> <property name="maximumActiveSessionPerConnection" value="500" />
> <property name="idleTimeout" value="0" />
> <property name="connectionFactory" ref="JMSConnectionFactory" />
> </bean>
> {quote}
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