Hi
We seem to receive an awful lot of "Object cannot be cast to Command"
exceptions, basically every minute or so.
It seems to be chaotic on Ubuntu 8.10 32b and a bit less frequent on XP or
so..
This still happens even with 5.3-SNAPSHOT (April 17)
What is the root cause of this?
Any suggestion would be greatly appreciated...
1/ What is the root cause of that problem?
2/ Is there a patch?
3/ If the app was not logging an ERROR for each of those... would it work
when all apps are running?
Thanks!
Benoit
2009-04-23 13:03:53,776 INFO [network.DiscoveryNetworkConnector#?] (Simple
Discovery Agent: java.util.concurrent.threadpoolexecutor$wor...@139d891:)
Establishing network connection from vm://appendium-jboss-server to
tcp://localhost:27000
2009-04-23 13:03:53,778 DEBUG [tcp.TcpTransport#?] (Simple Discovery Agent:
java.util.concurrent.threadpoolexecutor$wor...@139d891:) Stopping transport
tcp://null:0
2009-04-23 13:03:53,779 DEBUG [broker.TransportConnection#?] (ActiveMQ
Transport Initiator: vm://appendium-jboss-server#18:) stop() called in the
middle of start(). Delaying...
2009-04-23 13:03:53,792 WARN [network.DiscoveryNetworkConnector#?] (Simple
Discovery Agent: java.util.concurrent.threadpoolexecutor$wor...@139d891:)
Could not start network bridge between: vm://appendium-jboss-server and:
tcp://localhost:27000 due to: java.net.ConnectException: Connection refused
2009-04-23 13:03:53,792 DEBUG [network.DiscoveryNetworkConnector#?] (Simple
Discovery Agent: java.util.concurrent.threadpoolexecutor$wor...@139d891:)
Start failure exception: java.net.ConnectException: Connection refused
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:519)
at
org.apache.activemq.transport.tcp.TcpTransport.connect(TcpTransport.java:435)
at
org.apache.activemq.transport.tcp.TcpTransport.doStart(TcpTransport.java:401)
at
org.apache.activemq.util.ServiceSupport.start(ServiceSupport.java:53)
at
org.apache.activemq.transport.TransportFilter.start(TransportFilter.java:57)
at
org.apache.activemq.transport.TransportFilter.start(TransportFilter.java:57)
at
org.apache.activemq.transport.WireFormatNegotiator.start(WireFormatNegotiator.java:72)
at
org.apache.activemq.transport.TransportFilter.start(TransportFilter.java:57)
at
org.apache.activemq.transport.TransportFilter.start(TransportFilter.java:57)
at
org.apache.activemq.network.DemandForwardingBridgeSupport.start(DemandForwardingBridgeSupport.java:225)
at
org.apache.activemq.network.DiscoveryNetworkConnector.onServiceAdd(DiscoveryNetworkConnector.java:114)
at
org.apache.activemq.transport.discovery.simple.SimpleDiscoveryAgent$1.run(SimpleDiscoveryAgent.java:165)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
2009-04-23 13:03:53,792 DEBUG [network.DemandForwardingBridge#?] (Simple
Discovery Agent: java.util.concurrent.threadpoolexecutor$wor...@139d891:)
stopping appendium-jboss-server bridge to Unknown is disposed already ?
false
2009-04-23 13:03:53,793 DEBUG [network.DemandForwardingBridge#?]
(NetworkBridge:) Caught exception sending shutdown
org.apache.activemq.transport.TransportDisposedIOException: Transport
disposed.
at
org.apache.activemq.transport.vm.VMTransport.oneway(VMTransport.java:74)
at
org.apache.activemq.transport.MutexTransport.oneway(MutexTransport.java:40)
at
org.apache.activemq.transport.ResponseCorrelator.oneway(ResponseCorrelator.java:60)
at
org.apache.activemq.network.DemandForwardingBridgeSupport$5.run(DemandForwardingBridgeSupport.java:371)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
2009-04-23 13:03:53,795 INFO [network.DemandForwardingBridge#?] (Simple
Discovery Agent: java.util.concurrent.threadpoolexecutor$wor...@139d891:)
appendium-jboss-server bridge to Unknown stopped
2009-04-23 13:03:53,793 DEBUG [broker.TransportConnection#?] (ActiveMQ
Transport Initiator: vm://appendium-jboss-server#18:) Calling the delayed
stop()
2009-04-23 13:03:53,797 DEBUG [simple.SimpleDiscoveryAgent#?] (Simple
Discovery Agent: java.util.concurrent.threadpoolexecutor$wor...@32cd7f:)
Failure occured soon after the discovery event was generated. It will be
clasified as a connection failure:
org.apache.activemq.transport.discovery.simple.simplediscoveryagent$simplediscoveryev...@122e0b3
2009-04-23 13:03:53,824 DEBUG [simple.SimpleDiscoveryAgent#?] (Simple
Discovery Agent: java.util.concurrent.threadpoolexecutor$wor...@32cd7f:)
Waiting 30000 ms before attepting to reconnect.
2009-04-23 13:03:53,824 DEBUG [broker.TransportConnection#?] (ActiveMQ
Transport Stopper: vm://appendium-jboss-server#18:) Stopping connection:
vm://appendium-jboss-server#18
2009-04-23 13:03:53,859 DEBUG [broker.TransportConnection#?] (ActiveMQ
Transport Stopper: vm://appendium-jboss-server#18:) Stopped transport:
vm://appendium-jboss-server#18
2009-04-23 13:03:53,862 DEBUG [broker.TransportConnection#?] (ActiveMQ
Transport Stopper: vm://appendium-jboss-server#18:) Connection Stopped:
vm://appendium-jboss-server#18
2009-04-23 13:03:53,863 ERROR [broker.TransportConnector#?] (ActiveMQ
Transport Initiator: vm://appendium-jboss-server#18:) Could not accept
connection : java.lang.Object cannot be cast to
org.apache.activemq.command.Command
2009-04-23 13:03:53,863 DEBUG [broker.TransportConnector#?] (ActiveMQ
Transport Initiator: vm://appendium-jboss-server#18:) Reason:
java.lang.Object cannot be cast to org.apache.activemq.command.Command
java.lang.ClassCastException: java.lang.Object cannot be cast to
org.apache.activemq.command.Command
at
org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:89)
at
org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:68)
at
org.apache.activemq.transport.vm.VMTransport.start(VMTransport.java:126)
at
org.apache.activemq.transport.TransportFilter.start(TransportFilter.java:57)
at
org.apache.activemq.transport.TransportFilter.start(TransportFilter.java:57)
at
org.apache.activemq.broker.TransportConnection.start(TransportConnection.java:880)
at
org.apache.activemq.broker.TransportConnector$1$1.run(TransportConnector.java:213)
-----
Thanks & Regards,
Benoit
http://www.Appendium.com http://objectlab.blogspot.com
--
View this message in context:
http://www.nabble.com/Many-many-%22java.lang.Object-cannot-be-cast-to-org.apache.activemq.command.Command%22-tp23504988p23504988.html
Sent from the ActiveMQ - User mailing list archive at Nabble.com.
