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From "Akira AJISAKA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-6350) Documenting Hadoop metrics
Date Tue, 10 Sep 2013 20:49:53 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13763494#comment-13763494
] 

Akira AJISAKA commented on HADOOP-6350:
---------------------------------------

I've written a document describing hadoop metrics.
https://github.com/aajisaka/hadoop-metrics/wiki
I'd like to add it to hadoop project.

[~sinchii], thanks for your comment.
I wrote descriptions including following contents.
* metrics name(Display Name)
* the class where the metrics are written
* total value or current value
* unit(number, byte/MB/GB, or nanoseconds/milliseconds/seconds/minutes)
* the daemon(NameNode/DataNode/..) to output the metrics
                
> Documenting Hadoop metrics
> --------------------------
>
>                 Key: HADOOP-6350
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6350
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Hong Tang
>            Assignee: Akira AJISAKA
>         Attachments: HADOOP-6350-sample-1.patch, sample1.png
>
>
> Metrics should be part of public API, and should be clearly documented similar to HADOOP-5073,
so that we can reliably build tools on top of them.

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