After a long time (hours) of running, we cannot use nodetool to retrieve information of cassandra.
[cassan...@nd3-rack0-cloud cassandra]$ ../cassandra/bin/nodetool -h 10.24.1.16 -p 8081 info Exception in thread "main" java.lang.IllegalArgumentException: java.lang:type=Memory not found in the connection. at java.lang.management.ManagementFactory.newPlatformMXBeanProxy(ManagementFactory.java:629) at org.apache.cassandra.tools.NodeProbe.connect(NodeProbe.java:132) at org.apache.cassandra.tools.NodeProbe.<init>(NodeProbe.java:89) at org.apache.cassandra.tools.NodeCmd.main(NodeCmd.java:449) Caused by: javax.management.InstanceNotFoundException: java.lang:type=Memory at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getMBean(DefaultMBeanServerInterceptor.java:1094) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.isInstanceOf(DefaultMBeanServerInterceptor.java:1398) at com.sun.jmx.mbeanserver.JmxMBeanServer.isInstanceOf(JmxMBeanServer.java:1051) at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1433) at javax.management.remote.rmi.RMIConnectionImpl.access$200(RMIConnectionImpl.java:72) at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1265) at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1360) at javax.management.remote.rmi.RMIConnectionImpl.isInstanceOf(RMIConnectionImpl.java:898) at sun.reflect.GeneratedMethodAccessor31.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305) at sun.rmi.transport.Transport$1.run(Transport.java:159) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:155) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:255) at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:233) at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:142) at com.sun.jmx.remote.internal.PRef.invoke(Unknown Source) at javax.management.remote.rmi.RMIConnectionImpl_Stub.isInstanceOf(Unknown Source) at javax.management.remote.rmi.RMIConnector$RemoteMBeanServerConnection.isInstanceOf(RMIConnector.java:1073) at java.lang.management.ManagementFactory.newPlatformMXBeanProxy(ManagementFactory.java:616) ... 3 more