Hi All,

I am trying to do compaction on the same node.  But getting the below error any suggestion on this.

9160 Port is already opened 

 nodetool -h testserv1 -p 9160 compact
Error connecting to remote JMX agent!
java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.CommunicationException [Root exception is java.rmi.ConnectIOException: error during JRMP connection establishment; nested exception is:
        java.net.SocketTimeoutException: Read timed out]
        at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:369)
        at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:268)
        at org.apache.cassandra.tools.NodeProbe.connect(NodeProbe.java:151)
        at org.apache.cassandra.tools.NodeProbe.<init>(NodeProbe.java:121)
        at org.apache.cassandra.tools.NodeCmd.main(NodeCmd.java:1274)
Caused by: javax.naming.CommunicationException [Root exception is java.rmi.ConnectIOException: error during JRMP connection establishment; nested exception is:
        java.net.SocketTimeoutException: Read timed out]
        at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:118)
        at com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.java:203)
        at javax.naming.InitialContext.lookup(InitialContext.java:411)
        at javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(RMIConnector.java:1929)
        at javax.management.remote.rmi.RMIConnector.findRMIServer(RMIConnector.java:1896)
        at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:286)
        ... 4 more
Caused by: java.rmi.ConnectIOException: error during JRMP connection establishment; nested exception is:
        java.net.SocketTimeoutException: Read timed out
        at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:304)
        at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202)
        at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:341)
        at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
        at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:114)
        ... 9 more
Caused by: java.net.SocketTimeoutException: Read timed out
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.read(SocketInputStream.java:152)
        at java.net.SocketInputStream.read(SocketInputStream.java:122)
        at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
        at java.io.BufferedInputStream.read(BufferedInputStream.java:254)
        at java.io.DataInputStream.readByte(DataInputStream.java:265)
        at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:246)
        ... 13 more


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Best Regards,
Kiran.M.K.