Details
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Bug
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Status: Resolved
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Major
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Resolution: Fixed
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1.5.5
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None
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None
Description
In WildFly, set up a topic by executing following CLI:
/subsystem=messaging-activemq/server=default:write-attribute(name=security-enabled,value=false) :reload /subsystem=messaging-activemq/server=default/jms-topic=testTopic:add(entries=[java:/jms/topic/testTopic, java:jboss/exported/jms/topic/testTopic])
Then create a durable subscriber on it using the following test code:
public static void main(String[] args) throws Exception { Connection connection = null; Context namingContext = null; try { final Properties env = new Properties(); env.put(Context.INITIAL_CONTEXT_FACTORY, "org.wildfly.naming.client.WildFlyInitialContextFactory"); env.put(Context.PROVIDER_URL, System.getProperty(Context.PROVIDER_URL, "http-remoting://127.0.0.1:8080")); namingContext = new InitialContext(env); Topic topic = (Topic) namingContext.lookup("/jms/topic/testTopic"); ConnectionFactory connectionFactory = (ConnectionFactory) namingContext.lookup("jms/RemoteConnectionFactory"); connection = connectionFactory.createConnection(); connection.setClientID("durable-client"); connection.start(); Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); MessageProducer messageProducer = session.createProducer(topic); TopicSubscriber subscriber = session.createDurableSubscriber(topic, "subscriber-1"); TextMessage message1 = session.createTextMessage("This is a text message 1"); messageProducer.send(message1); System.out.println("Sent message: " + message1.getText()); TextMessage messageReceived = (TextMessage) subscriber.receive(); System.out.println("Received message: " + messageReceived.getText()); try { Thread.sleep(20000); // wait 20 seconds before un-subscribe } catch (InterruptedException e) { e.printStackTrace(); } subscriber.close(); session.unsubscribe("subscriber-1"); } finally { if (connection != null) { connection.close(); } if (namingContext != null) { namingContext.close(); } } }
The code above will sleep 20 seconds before un-subscribe, try to execute the following WildFly CLI within 20 seconds:
/subsystem=messaging-activemq/server=default/jms-topic=testTopic:drop-durable-subscription(client-id=durable-client, subscription-name=subscriber-1)
The WildFly CLI succeeded, but there is a NPE in the server log:
09:10:42,340 ERROR [org.apache.activemq.artemis.core.server] (Thread-3 (ActiveMQ-server-org.apache.activemq.artemis.core.server.impl.ActiveMQServerImpl$3@7ba46694)) AMQ224065: Failed to remove auto-created queue testSubscriberClientIdjmsTopicOperations.testSubscriber: java.lang.NullPointerException at org.apache.activemq.artemis.jms.server.impl.JMSServerManagerImpl$JMSQueueDeleter.delete(JMSServerManagerImpl.java:1669) [artemis-jms-server-1.5.5.008-redhat-1.jar:1.5.5.008-redhat-1] at org.apache.activemq.artemis.core.server.impl.AutoCreatedQueueManagerImpl$1.run(AutoCreatedQueueManagerImpl.java:36) [artemis-server-1.5.5.008-redhat-1.jar:1.5.5.008-redhat-1] at org.apache.activemq.artemis.utils.ReferenceCounterUtil.decrement(ReferenceCounterUtil.java:54) [artemis-commons-1.5.5.008-redhat-1.jar:1.5.5.008-redhat-1] at org.apache.activemq.artemis.core.server.impl.AutoCreatedQueueManagerImpl.decrement(AutoCreatedQueueManagerImpl.java:58) [artemis-server-1.5.5.008-redhat-1.jar:1.5.5.008-redhat-1] at org.apache.activemq.artemis.core.server.impl.QueueImpl.removeConsumer(QueueImpl.java:786) [artemis-server-1.5.5.008-redhat-1.jar:1.5.5.008-redhat-1] at org.apache.activemq.artemis.core.server.impl.ServerConsumerImpl.removeItself(ServerConsumerImpl.java:496) [artemis-server-1.5.5.008-redhat-1.jar:1.5.5.008-redhat-1] at org.apache.activemq.artemis.core.server.impl.ServerConsumerImpl.close(ServerConsumerImpl.java:443) [artemis-server-1.5.5.008-redhat-1.jar:1.5.5.008-redhat-1] at org.apache.activemq.artemis.core.server.impl.ServerSessionImpl.closeConsumer(ServerSessionImpl.java:1174) [artemis-server-1.5.5.008-redhat-1.jar:1.5.5.008-redhat-1] at org.apache.activemq.artemis.core.protocol.core.ServerSessionPacketHandler.internalHandlePacket(ServerSessionPacketHandler.java:445) [artemis-server-1.5.5.008-redhat-1.jar:1.5.5.008-redhat-1] at org.apache.activemq.artemis.core.protocol.core.ServerSessionPacketHandler.lambda$handlePacket$0(ServerSessionPacketHandler.java:211) [artemis-server-1.5.5.008-redhat-1.jar:1.5.5.008-redhat-1] at org.apache.activemq.artemis.utils.OrderedExecutorFactory$OrderedExecutor$ExecutorTask.run(OrderedExecutorFactory.java:122) [artemis-commons-1.5.5.008-redhat-1.jar:1.5.5.008-redhat-1] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [rt.jar:1.8.0_151] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [rt.jar:1.8.0_151] at java.lang.Thread.run(Thread.java:748) [rt.jar:1.8.0_151]
Despite this error, subscription is removed and listing of all subscriptions is now empty. Operation works as expected, however there is an Error logged on server side.
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