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Date: Mon, 19 Jan 2009 09:47:59 -0800 (PST)
From: "Jerome Boulon (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-5025) Add instrumentation Api for Chukwa
 components
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    [ https://issues.apache.org/jira/browse/HADOOP-5025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12665164#action_12665164 ] 

Jerome Boulon commented on HADOOP-5025:
---------------------------------------

here a list of basic stats for chukwa that I'm planning to expose while I'm adding the instrumentation API:

Agent Metrics
- uptime
- adaptor count

HTTP Sender Metrics
- Http post count/minute, exception count, 

Collector Metrics
- #connection/minute, data size written/minute 

later on, anybody will be able to add new metrics using the instrumentation API (ex Adaptor specific stats, Queue stats,....)

> Add instrumentation Api for Chukwa components
> ---------------------------------------------
>
>                 Key: HADOOP-5025
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5025
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: contrib/chukwa
>            Reporter: Jerome Boulon
>            Assignee: Jerome Boulon
>
> Chukwa Components should be able to emit some metrics in an easy way.
> I'm thinking of reusing the new HADOOP JMX instrumentation API to do that + MetricsContext to output/collect them using chukwa.

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