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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CASSANDRA-8174) cfhistograms doesn't work for some CFs
Date Thu, 23 Oct 2014 16:41:34 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-8174?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Williams resolved CASSANDRA-8174.
-----------------------------------------
    Resolution: Duplicate

> cfhistograms doesn't work for some CFs
> --------------------------------------
>
>                 Key: CASSANDRA-8174
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8174
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: Cassandra 2.1 | Linux XXX 3.2.0-4-amd64 #1 SMP Debian 3.2.60-1+deb7u3
x86_64 GNU/Linux | java version "1.7.0_51"
>            Reporter: MichaƂ Jaszczyk
>
> After I upgraded cassandra to the latest version (2.0 -> 2.1), the nodetool cfhistograms
doesn't work anymore. It doesn't work for most of my CFs but not for all of them, I cannot
find the rule.
> Details for one CF:
> {code}
> $ ./nodetool -h isu cfhistograms yyy xxx
> nodetool: Unable to compute when histogram overflowed
> See 'nodetool help' or 'nodetool help <command>'.
> {code}
> I have just created new CF and started inserting some data. The cfhistograms doesn't
work for this table as well.
> Example for different random CF which is similar to the one above:
> {code}
> $ ./nodetool cfhistograms yyy xxy
> yyy/xxy histograms
> Percentile  SSTables     Write Latency      Read Latency    Partition Size        Cell
Count
>                               (micros)          (micros)           (bytes)
> 50%             3.00             52.63           1634.53             11864          
    215
> 75%             3.00             62.67           2397.65             42510          
    770
> 95%             4.00             88.94           3317.58            454826          
   8239
> 98%             4.00            108.98           3317.58           2816159          
  61214
> 99%             4.00            127.18           3317.58           8409007          
 152321
> Min             3.00              9.91            889.27               925          
     18
> Max             4.00         216841.55           3317.58          17436917          12108970
> {code}



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