hi,all I’m a newbie in activemq. I use active-5.5.5 on rhel5.4 X86_64 in pure master/slave mode. I leave master’s config file activemq.xml the default,and only add the following after “<broker” on the slave server: brokerName="slave" masterConnectorURI="tcp://masterip:61616" shutdownOnMasterFailure="false" persistent="false".
The topology can switch when I shut down the master. When I running both the master and the slave,I get the following error message on the master: 2013-12-03 19:47:24,190 | ERROR | Slave Failed | org.apache.activemq.broker.ft.MasterBroker | ActiveMQ Transport: tcp:///clientip:6812 java.lang.IllegalStateException: Cannot lookup a consumer from a connection that had not been registered: ID:tjccb-vod-DC-193-45-53444-1385544308281-0:2 at org.apache.activemq.broker.MapTransportConnectionStateRegister.lookupConnectionState(MapTransportConnectionStateRegister.java:67) at org.apache.activemq.broker.TransportConnection.lookupConnectionState(TransportConnection.java:1423) at org.apache.activemq.broker.TransportConnection.getConsumerBrokerExchange(TransportConnection.java:1337) at org.apache.activemq.broker.TransportConnection.processMessageAck(TransportConnection.java:464) at org.apache.activemq.command.MessageAck.visit(MessageAck.java:229) at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:306) at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:179) 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:104) at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:42) and the error message on the slave: 2013-12-03 19:47:26,013 | WARN | Async error occurred: java.lang.IllegalStateException: Cannot lookup a connection that had not been registered: ID:tjccb-vod-activeMQ-193-42 -52963-1385544249228-0:8 | org.apache.activemq.broker.TransportConnection.Service | VMTransport: vm://slave#1 java.lang.IllegalStateException: Cannot lookup a connection that had not been registered: ID:tjccb-vod-activeMQ-193-42.idc.pplive.cn-52963-1385544249228-0:8 at org.apache.activemq.broker.MapTransportConnectionStateRegister.lookupConnectionState(MapTransportConnectionStateRegister.java:97) at org.apache.activemq.broker.TransportConnection.lookupConnectionState(TransportConnection.java:1435) at org.apache.activemq.broker.TransportConnection.processBeginTransaction(TransportConnection.java:362) at org.apache.activemq.command.TransactionInfo.visit(TransactionInfo.java:94) at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:306) at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:179) 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:104) at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:42) who can help me out?