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Date: Thu, 7 Jun 2012 22:26:22 +0000 (UTC)
From: "David B (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Message-ID: <2076336641.50234.1339107983266.JavaMail.jiratomcat@issues-vm>
Subject: [jira] [Created] (CASSANDRA-4318) Nodetool compactionstats fails
 with NullPointerException
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David B created CASSANDRA-4318:
----------------------------------

             Summary: Nodetool compactionstats fails with NullPointerException
                 Key: CASSANDRA-4318
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4318
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 1.1.1
         Environment: 2 node cluster running on Ubuntu 10.10 64-bit
16GB Max Heap allocated to each node.
Test keyspace using replication factor 2
            Reporter: David B


Test uses Column family C defined as follows:

create column family C with caching = 'keys_only' and key_validation_class = 'LongType' and compression_options = { sstable_compression: SnappyCompressor, chunk_length_kb: 64 } and max_compaction_threshold=0; 

max_compaction_threshold is set to 0 to disable auto compaction.

SSTables are streamed via sstableloader, after which a major compaction is triggered using "nodetool compact MyKeyspace C".

Thereafter, attempts to request compaction stats via "nodetool compactionstats" fail with the following exception:

Exception in thread "main" java.lang.NullPointerException
        at org.apache.cassandra.db.compaction.CompactionInfo.asMap(CompactionInfo.java:103)
        at org.apache.cassandra.db.compaction.CompactionManager.getCompactions(CompactionManager.java:1115)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:93)
        at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:27)
        at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:208)
        at com.sun.jmx.mbeanserver.PerInterface.getAttribute(PerInterface.java:65)
        at com.sun.jmx.mbeanserver.MBeanSupport.getAttribute(MBeanSupport.java:216)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:666)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:638)
        at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1404)
        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.getAttribute(RMIConnectionImpl.java:600)
        at sun.reflect.GeneratedMethodAccessor12.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:303)
        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:662) 

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