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From "Eric Evans (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-272) Enhance how metrics are exposed
Date Mon, 06 Jul 2009 22:53:14 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12727825#action_12727825
] 

Eric Evans commented on CASSANDRA-272:
--------------------------------------

After some discussion on IRC between myself, Sammy, and Jonathan, it was decided that a) we'll
go without a TableMBean unless/until there something Table-specific to expose, and b) we need
a CFSMbean organization that is human readable as well, possibly by manipulating the object
name to parent by tablename instead of CF name.

> 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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