Out of Memory error.

[shirish]

Hello,

I managed to run two nodes on machines with IP address 192.168.0.6(cass01)
and 192.168.0.17(cass02). After a while when i did *nodeprobe --host cass01
--port 9160 I get this  messages on cass01 *

INFO 12:35:58,809 Node /192.168.0.17 state jump to normal
java.lang.OutOfMemoryError: Java heap space
Dumping heap to java_pid3496.hprof ...
Heap dump file created [7632952 bytes in 0.233 secs]
ERROR 12:43:19,288 Fatal exception in thread Thread[pool-1-thread-3,5,main]
java.lang.OutOfMemoryError: Java heap space
    at
org.apache.thrift.protocol.TBinaryProtocol.readStringBody(TBinaryProtocol.java:296)
    at
org.apache.thrift.protocol.TBinaryProtocol.readMessageBegin(TBinaryProtocol.java:203)
    at
org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:1103)
    at
org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:253)
    at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:636)

and t*his one on cass02 *

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.io.EOFException]
    at
javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:342)
    at
javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:267)
    at org.apache.cassandra.tools.NodeProbe.connect(NodeProbe.java:105)
    at org.apache.cassandra.tools.NodeProbe.<init>(NodeProbe.java:81)
    at org.apache.cassandra.tools.NodeCmd.main(NodeCmd.java:400)
Caused by: javax.naming.CommunicationException [Root exception is
java.rmi.ConnectIOException: error during JRMP connection establishment;
nested exception is:
    java.io.EOFException]
    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:409)
    at
javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(RMIConnector.java:1902)
    at
javax.management.remote.rmi.RMIConnector.findRMIServer(RMIConnector.java:1871)
    at
javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:276)
    ... 4 more
Caused by: java.rmi.ConnectIOException: error during JRMP connection
establishment; nested exception is:
    java.io.EOFException
    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:340)
    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.io.EOFException
    at java.io.DataInputStream.readByte(DataInputStream.java:267)
    at
sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:246)
    ... 13 more




where can I get to read more about such Exceptions in cassandra ? and what
might be the reason.