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Date: Sat, 4 Jul 2009 01:00:51 -0700 (PDT)
From: "Aaron Kimball (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Subject: [jira] Commented: (HDFS-453)  XML-based metrics as JSP servlet for
 NameNode
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    [ https://issues.apache.org/jira/browse/HDFS-453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12727204#action_12727204 ] 

Aaron Kimball commented on HDFS-453:
------------------------------------

The test failures are unrelated. Confusingly, it looks from that test report that only the hdfsproxy component is tested -- not HDFS itself?

>  XML-based metrics as JSP servlet for NameNode
> ----------------------------------------------
>
>                 Key: HDFS-453
>                 URL: https://issues.apache.org/jira/browse/HDFS-453
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: Aaron Kimball
>            Assignee: Aaron Kimball
>         Attachments: HDFS-453.2.patch, HDFS-453.patch
>
>
> In HADOOP-4559, a general REST API for reporting metrics was proposed but work seems to have stalled. In the interim, we have a simple XML translation of the existing NameNode status page which provides the same metrics as the human-readable page. This is a relatively lightweight addition to provide some machine-understandable metrics reporting.

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