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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-453) XML-based metrics as JSP servlet for NameNode
Date Wed, 09 Jun 2010 06:34:12 GMT

     [ https://issues.apache.org/jira/browse/HDFS-453?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eli Collins updated HDFS-453:
-----------------------------

              Summary: XML-based metrics as JSP servlet for NameNode  (was:  XML-based metrics
as JSP servlet for NameNode)
        Fix Version/s: 0.21.0
                       0.22.0
    Affects Version/s: 0.21.0
                       0.22.0
          Component/s: name-node

Let's target for 21 to complement MR-679.

> 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
>          Components: name-node
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Aaron Kimball
>            Assignee: Aaron Kimball
>             Fix For: 0.21.0, 0.22.0
>
>         Attachments: dfshealth.xml.jspx, example-dfshealth.xml, HDFS-453.2.patch, HDFS-453.3.patch,
HDFS-453.4.patch, HDFS-453.5.patch, HDFS-453.6.patch, HDFS-453.7.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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