HI, I've setup a master/slave configuration using the 'A Shared Nothing' deployment. I had two fresh ActiveMQ 5.4.1 deployment and two servers named activemqc and activemqd. I have edited the configuration following http://activemq.apache.org/pure-master-slave.html.
But after some message get through the master the slave is giving me errors I can't place. Has anyone on the list any ideas? 2010-10-18 10:31:33,375 | ERROR | Slave Failed | org.apache.activemq.broker.ft.MasterBroker | VMTransport: vm://localhost#1 javax.jms.JMSException: Unmatched acknowledge: MessageAck {commandId = 391, responseRequired = true, ackType = 2, consumerId = ID:activemqC-57178-1287041884082-4:0:1:3, firstMessageId = ID:javadude-14402-1287044958218-0:0:1:1:1, lastMessageId = ID:javadude-14402-1287044958218-0:0:1:1:1, destination = queue://queue1.positionevent, transactionId = null, messageCount = 1}; Could not find Message-ID ID:javadude-14402-1287044958218-0:0:1:1:1 in dispatched-list (start of ack) at org.apache.activemq.broker.region.PrefetchSubscription.assertAckMatchesDispatched(PrefetchSubscription.java:436) at org.apache.activemq.broker.region.PrefetchSubscription.acknowledge(PrefetchSubscription.java:207) at org.apache.activemq.broker.region.AbstractRegion.acknowledge(AbstractRegion.java:383) at org.apache.activemq.broker.region.RegionBroker.acknowledge(RegionBroker.java:543) at org.apache.activemq.broker.BrokerFilter.acknowledge(BrokerFilter.java:77) at org.apache.activemq.broker.BrokerFilter.acknowledge(BrokerFilter.java:77) at org.apache.activemq.broker.BrokerFilter.acknowledge(BrokerFilter.java:77) at org.apache.activemq.broker.TransactionBroker.acknowledge(TransactionBroker.java:200) at org.apache.activemq.broker.MutableBrokerFilter.acknowledge(MutableBrokerFilter.java:87) at org.apache.activemq.broker.TransportConnection.processMessageAck(TransportConnection.java:467) at org.apache.activemq.command.MessageAck.visit(MessageAck.java:205) at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:309) at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185) at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116) at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69) at org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:218) at org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98) at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36) 2010-10-18 10:31:33,375 | ERROR | Slave Failed | org.apache.activemq.broker.ft.MasterBroker | ActiveMQ Connection Dispatcher: vm://localhost#0 java.lang.NullPointerException at org.apache.activemq.broker.region.PrefetchSubscription.processMessageDispatchNotification(PrefetchSubscription.java:166) at org.apache.activemq.broker.region.Queue.processDispatchNotification(Queue.java:1896) at org.apache.activemq.broker.region.AbstractRegion.processDispatchNotificationViaDestination(AbstractRegion.java:447) at org.apache.activemq.broker.region.QueueRegion.processDispatchNotification(QueueRegion.java:91) at org.apache.activemq.broker.region.RegionBroker.processDispatchNotification(RegionBroker.java:681) at org.apache.activemq.broker.BrokerFilter.processDispatchNotification(BrokerFilter.java:205) at org.apache.activemq.broker.BrokerFilter.processDispatchNotification(BrokerFilter.java:205) at org.apache.activemq.broker.BrokerFilter.processDispatchNotification(BrokerFilter.java:205) at org.apache.activemq.broker.BrokerFilter.processDispatchNotification(BrokerFilter.java:205) at org.apache.activemq.broker.MutableBrokerFilter.processDispatchNotification(MutableBrokerFilter.java:211) at org.apache.activemq.broker.TransportConnection.processMessageDispatchNotification(TransportConnection.java:476) at org.apache.activemq.command.MessageDispatchNotification.visit(MessageDispatchNotification.java:77) at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:309) at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185) at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116) at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69) at org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:218) at org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98) at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36)