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https://issues.apache.org/jira/browse/CASSANDRA-272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12727398#action_12727398
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Sammy Yu edited comment on CASSANDRA-272 at 7/5/09 11:00 PM:
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0002 is self-contained patch (ignore 0001 patch):
   * Registers the mbean properly to use domain, type, and key-value pairs
   * Adds write latency and operation metric to super column family mbean
   * All table metric calculation is calculated at the super column level
   * Adds a new nodeprobe stat command which retrieves these metrics



      was (Author: sammy.yu):
    Self-contained patch, ignore previous 0001 patch.
  
> Enhance how metrics are exposed
> -------------------------------
>
>                 Key: CASSANDRA-272
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-272
>             Project: Cassandra
>          Issue Type: New Feature
>    Affects Versions: 0.3
>            Reporter: Sammy Yu
>            Assignee: Sammy Yu
>            Priority: Minor
>             Fix For: 0.3
>
>         Attachments: 0001--Work-for-cassandra-272.patch, 
> 0002--Work-for-cassandra-272.patch
>
>
> Had discussion on IRC about the metric interfaces that are used in the code 
> today.  There are two sets one using IAnalyticsSource to send data to 
> Gangalia and another set of interface using JMX MBeans (ie, 
> ColumnStoreFamily).  
> Since FB is not using Gangalia anymore and it looks like the other 
> VMAnalyticsSource is already available via JMX, we should prefer to expose 
> metrics through JMX.  I will add a new TableMBean which exposes the metrics 
> in  DBAnalyticsSource.

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