We have about 5000 column family and when we run the nodetool cfstats it throws out this exception... this is running 1.0.0-rc1
This seems to work on 0.8.6. Is this a bug in 1.0.0? thanks Ramesh Keyspace: system Read Count: 28 Read Latency: 5.8675 ms. Write Count: 3 Write Latency: 0.166 ms. Pending Tasks: 0 Column Family: Schema SSTable count: 4 Space used (live): 4293758276 Space used (total): 4293758276 Number of Keys (estimate): 5376 Memtable Columns Count: 0 Memtable Data Size: 0 Memtable Switch Count: 0 Read Count: 3 Read Latency: NaN ms. Write Count: 0 Write Latency: NaN ms. Pending Tasks: 0 Key cache capacity: 53 Key cache size: 2 Key cache hit rate: NaN Row cache: disabled Compacted row minimum size: 104 Compacted row maximum size: 1955666 Compacted row mean size: 1508515 Column Family: HintsColumnFamily SSTable count: 0 Space used (live): 0 Space used (total): 0 Number of Keys (estimate): 0 Memtable Columns Count: 0 Memtable Data Size: 0 Memtable Switch Count: 0 Read Count: 5 Read Latency: NaN ms. Write Count: 0 Write Latency: NaN ms. Pending Tasks: 0 Key cache capacity: 1 Key cache size: 0 Key cache hit rate: NaN Row cache: disabled Compacted row minimum size: 0 Compacted row maximum size: 0 Compacted row mean size: 0 Column Family: LocationInfo SSTable count: 1 Space used (live): 6947 Space used (total): 6947 Number of Keys (estimate): 128 Memtable Columns Count: 0 Memtable Data Size: 0 Memtable Switch Count: 2 Read Count: 20 Read Latency: NaN ms. Write Count: 3 Write Latency: NaN ms. Pending Tasks: 0 Key cache capacity: 1 Key cache size: 1 Key cache hit rate: NaN Row cache: disabled Compacted row minimum size: 73 Compacted row maximum size: 258 Compacted row mean size: 185 Column Family: Migrations SSTable count: 4 Space used (live): 4315909643 Space used (total): 4315909643 Number of Keys (estimate): 512 Memtable Columns Count: 0 Memtable Data Size: 0 Memtable Switch Count: 0 Read Count: 0 Read Latency: NaN ms. Write Count: 0 Write Latency: NaN ms. Pending Tasks: 0 Key cache capacity: 5 Key cache size: 0 Key cache hit rate: NaN Row cache: disabled Compacted row minimum size: 5839589 Compacted row maximum size: 9223372036854775807 Exception in thread "main" java.lang.IllegalStateException: Unable to compute ceiling for max when histogram overflowed at org.apache.cassandra.utils.EstimatedHistogram.mean(EstimatedHistogram.java:170) at org.apache.cassandra.db.DataTracker.getMeanRowSize(DataTracker.java:395) at org.apache.cassandra.db.ColumnFamilyStore.getMeanRowSize(ColumnFamilyStore.java:275) at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source) 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.GeneratedMethodAccessor45.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:662)