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From "Nigel Daley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-679) XML-based metrics as JSP servlet for JobTracker
Date Mon, 12 Oct 2009 15:13:31 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12764708#action_12764708
] 

Nigel Daley commented on MAPREDUCE-679:
---------------------------------------

{quote}
Aaron Kimball added a comment - 18/Sep/09 02:54 PM
unrelated test failure.
{quote}

Aaron, the test failure seen by Hadoop QA was related to this patch.  Looks like you remove
an unzip function in build.xml which has caused TestCopyFile to fail now for the past 2+ weeks.
 MAPREDUCE-1029  has been opened to fix this. Please comment there on why it was removed and
please be more careful analyzing failed test cases.

> XML-based metrics as JSP servlet for JobTracker
> -----------------------------------------------
>
>                 Key: MAPREDUCE-679
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-679
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: jobtracker
>            Reporter: Aaron Kimball
>            Assignee: Aaron Kimball
>             Fix For: 0.21.0
>
>         Attachments: example-jobtracker-completed-job.xml, example-jobtracker-running-job.xml,
MAPREDUCE-679.2.patch, MAPREDUCE-679.3.patch, MAPREDUCE-679.4.patch, MAPREDUCE-679.5.patch,
MAPREDUCE-679.6.patch, MAPREDUCE-679.7.patch, MAPREDUCE-679.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 JobTracker
status page which provides the same metrics (including the tables of running/completed/failed
jobs) as the human-readable page. This is a relatively lightweight addition to provide some
machine-understandable metrics reporting.

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