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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-453) XML-based metrics as JSP servlet for NameNode
Date Wed, 22 Dec 2010 04:32:02 GMT

    [ https://issues.apache.org/jira/browse/HDFS-453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12974048#action_12974048
] 

Hadoop QA commented on HDFS-453:
--------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12446660/HDFS-453.7.patch
  against trunk revision 1051669.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 2 new or modified tests.

    -1 patch.  The patch command could not apply the patch.

Console output: https://hudson.apache.org/hudson/job/PreCommit-HDFS-Build/36//console

This message is automatically generated.

> 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: 0.22.0
>
>         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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