I am using a Singleton MDB as the consumer for a queue. It works fine when
there are limited no. of messages. But when the no. of messages > 100 there is
a NullPointer Exception thrown and rest of the messages are not consumed.
Also this problem occured in jboss-4.0.1sp1 only. It works perfectly with 3.2.5
I have given the trace below:
2005-04-19 15:36:42,501 WARN org.jboss.mq.SpyConnectionConsumer - Connection
consumer closing due to error in listening thread
SpyConnectionConsumer[sub=Subscription[subId=-2147483648connection=ConnectionToken:ID:3/e89fc04887ea0ab1c289465dc78f6594
destination=QUEUE.TASK_INBOUND_QUEUE messageSelector=null Local Create]
messages=0 waitingForMessage=false internalThread=Thread[Connection Consumer
for dest
Subscription[subId=-2147483648connection=ConnectionToken:ID:3/e89fc04887ea0ab1c289465dc78f6594
destination=QUEUE.TASK_INBOUND_QUEUE messageSelector=null Local Create]
id=2,5,jboss] [EMAIL PROTECTED] [EMAIL
PROTECTED]:ID:3/e89fc04887ea0ab1c289465dc78f6594 rcvstate=STARTED]]
org.jboss.mq.SpyJMSException: Cannot receive ; - nested throwable:
(java.lang.NullPointerException)
at org.jboss.mq.Connection.receive(Connection.java:968)
at
org.jboss.mq.SpyConnectionConsumer.run(SpyConnectionConsumer.java:238)
at java.lang.Thread.run(Thread.java:534)
Caused by: java.lang.NullPointerException
at
org.jboss.mq.pm.jdbc3.PersistenceManager.loadFromStorage(PersistenceManager.java:850)
at
org.jboss.mq.server.MessageCache.loadFromStorage(MessageCache.java:411)
at
org.jboss.mq.server.MessageReference.makeHard(MessageReference.java:351)
at
org.jboss.mq.server.MessageReference.getMessage(MessageReference.java:156)
at
org.jboss.mq.server.BasicQueue.setupMessageAcknowledgement(BasicQueue.java:881)
at org.jboss.mq.server.BasicQueue.receive(BasicQueue.java:488)
at org.jboss.mq.server.JMSQueue.receive(JMSQueue.java:136)
at org.jboss.mq.server.ClientConsumer.receive(ClientConsumer.java:222)
at
org.jboss.mq.server.JMSDestinationManager.receive(JMSDestinationManager.java:673)
at
org.jboss.mq.server.JMSServerInterceptorSupport.receive(JMSServerInterceptorSupport.java:226)
at
org.jboss.mq.security.ServerSecurityInterceptor.receive(ServerSecurityInterceptor.java:100)
at
org.jboss.mq.server.TracingInterceptor.receive(TracingInterceptor.java:570)
at
org.jboss.mq.server.JMSServerInvoker.receive(JMSServerInvoker.java:226)
at org.jboss.mq.il.jvm.JVMServerIL.receive(JVMServerIL.java:244)
at org.jboss.mq.Connection.receive(Connection.java:957)
... 2 more
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