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Posted to dev@qpid.apache.org by "Keith Wall (Updated) (JIRA)" <ji...@apache.org> on 2011/11/28 16:31:40 UTC
[jira] [Updated] (QPID-3634) JMX ManagedQueue methods
moveMessage/copyMessage operations can throw NullPointerException
[ https://issues.apache.org/jira/browse/QPID-3634?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Keith Wall updated QPID-3634:
-----------------------------
Affects Version/s: (was: 0.15)
(was: 0.14)
(was: 0.12)
(was: 0.10)
> JMX ManagedQueue methods moveMessage/copyMessage operations can throw NullPointerException
> ------------------------------------------------------------------------------------------
>
> Key: QPID-3634
> URL: https://issues.apache.org/jira/browse/QPID-3634
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker
> Affects Versions: 0.5
> Reporter: Keith Wall
> Assignee: Keith Wall
>
> Calls to JMX methods ManagedQueue#moveMesssage and ManagedQueue#copyMessage can throw NullPointerException. This will happen if there is a consumer attached to the destination queue and the subscription changes state. This can easily be seen with consumers with a low prefetch. The exception will be seen once the pre-fetch buffer is full.
> The underlying issue is the absence on a logging actor on the JMX thread. Some JMX methods are adding a logging actor, some are not.
> {code}
> java.lang.NullPointerException
> at org.apache.qpid.server.subscription.SubscriptionImpl.creditStateChanged(SubscriptionImpl.java:616)
> at org.apache.qpid.server.flow.AbstractFlowCreditManager.notifyListeners(AbstractFlowCreditManager.java:46)
> at org.apache.qpid.server.flow.AbstractFlowCreditManager.setSuspended(AbstractFlowCreditManager.java:54)
> at org.apache.qpid.server.flow.Pre0_10CreditManager.useCreditForMessage(Pre0_10CreditManager.java:156)
> at org.apache.qpid.server.subscription.SubscriptionImpl.wouldSuspend(SubscriptionImpl.java:540)
> at org.apache.qpid.server.queue.SimpleAMQQueue.deliverToSubscription(SimpleAMQQueue.java:484)
> at org.apache.qpid.server.queue.SimpleAMQQueue.enqueue(SimpleAMQQueue.java:450)
> at org.apache.qpid.server.queue.SimpleAMQQueue.enqueue(SimpleAMQQueue.java:367)
> at org.apache.qpid.server.queue.SimpleAMQQueue.moveMessagesToAnotherQueue(SimpleAMQQueue.java:953)
> at org.apache.qpid.server.queue.AMQQueueMBean.moveMessages(AMQQueueMBean.java:556)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:93)
> at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:27)
> at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:208)
> at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:120)
> at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:262)
> at javax.management.StandardMBean.invoke(StandardMBean.java:391)
> at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836)
> at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761)
> at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> {code}
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