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From "Zenek Kraweznik (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3763) compactionstats throws ArithmeticException: / by zero
Date Tue, 28 Feb 2012 17:51:46 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13218395#comment-13218395
] 

Zenek Kraweznik commented on CASSANDRA-3763:
--------------------------------------------

Problem appears after ugprading 1.0.6 to 1.0.7. I've create only one keyspace with 4 column
family. All of my CF are:
  with column_type = 'Standard'
  and comparator = 'AsciiType'
  and default_validation_class = 'AsciiType'
  and key_validation_class = 'AsciiType'
  and rows_cached = 0.0
  and row_cache_save_period = 0
  and row_cache_keys_to_save = 2147483647
  and keys_cached = 200000.0
  and key_cache_save_period = 14400
  and read_repair_chance = 1.0
  and gc_grace = 864000
  and min_compaction_threshold = 2
  and max_compaction_threshold = 4
  and replicate_on_write = true
  and row_cache_provider = 'ConcurrentLinkedHashCacheProvider'
  and compaction_strategy = 'org.apache.cassandra.db.compaction.LeveledCompactionStrategy'
  and compaction_strategy_options = {'sstable_size_in_mb' : '4096'}
  and compression_options = {'chunk_length_kb' : '64', 'sstable_compression' : 'org.apache.cassandra.io.compress.SnappyCompressor'};

system keyspace is untouched, I didn't change it.

After upgrading node try to use 'nodetool -h $IP compactionstats'

                
> compactionstats throws ArithmeticException: / by zero
> -----------------------------------------------------
>
>                 Key: CASSANDRA-3763
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3763
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core, Tools
>    Affects Versions: 1.0.7, 1.0.8
>         Environment: debian linux - openvz kernel, oracle java 1.6.0.26
>            Reporter: Zenek Kraweznik
>            Priority: Trivial
>
> compactionstats looks like this:
> # nodetool -h localhost compactionstats
> Exception in thread "main" java.lang.ArithmeticException: / by zero
>         at org.apache.cassandra.db.compaction.LeveledManifest.getEstimatedTasks(LeveledManifest.java:435)
>         at org.apache.cassandra.db.compaction.LeveledCompactionStrategy.getEstimatedRemainingTasks(LeveledCompactionStrategy.java:128)
>         at org.apache.cassandra.db.compaction.CompactionManager.getPendingTasks(CompactionManager.java:1060)
>         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.GeneratedMethodAccessor10.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)
> #
> nodetool is working fine in other actions:
> # nodetool -h localhost netstats
> Mode: NORMAL
> Not sending any streams.
> Not receiving any streams.
> Pool Name                    Active   Pending      Completed
> Commands                        n/a         0              2
> Responses                       n/a         0           1810
> #

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