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From "Nikolai Grigoriev (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-7956) "nodetool compactionhistory" crashes because of low heap size (GC overhead limit exceeded)
Date Wed, 17 Sep 2014 14:18:34 GMT
Nikolai Grigoriev created CASSANDRA-7956:
--------------------------------------------

             Summary: "nodetool compactionhistory" crashes because of low heap size (GC overhead
limit exceeded)
                 Key: CASSANDRA-7956
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7956
             Project: Cassandra
          Issue Type: Bug
         Environment: Cassandra 2.0.8
            Reporter: Nikolai Grigoriev
            Priority: Trivial
         Attachments: nodetool_compactionhistory_128m_heap_output.txt.gz

{code}
]# nodetool compactionhistory
Compaction History:
Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded
        at java.io.ObjectStreamClass.newInstance(ObjectStreamClass.java:967)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1782)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
        at java.util.HashMap.readObject(HashMap.java:1180)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
        at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
        at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
        at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500)
        at javax.management.openmbean.TabularDataSupport.readObject(TabularDataSupport.java:912)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
        at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
        at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:325)
        at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:174)
        at com.sun.jmx.remote.internal.PRef.invoke(Unknown Source)
        at javax.management.remote.rmi.RMIConnectionImpl_Stub.getAttribute(Unknown Source)
        at javax.management.remote.rmi.RMIConnector$RemoteMBeanServerConnection.getAttribute(RMIConnector.java:906)
        at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:267)
        at com.sun.proxy.$Proxy3.getCompactionHistory(Unknown Source)
{code}

nodetool starts with -Xmx32m. This seems to be not enough at least in my case to show the
history. I am not sure what would the appropriate amount be but increasing it to 128m definitely
solves the problem. Output from modified nodetool attached.



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