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From "Sharad Agarwal (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-864) Enhance JobClient API implementations to look at history files to get information about jobs that are not in memory
Date Tue, 15 Sep 2009 09:31:57 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-864?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sharad Agarwal updated MAPREDUCE-864:
-------------------------------------

    Fix Version/s:     (was: 0.21.0)

> Enhance JobClient API implementations to look at history files to get information about
jobs that are not in memory
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-864
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-864
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: jobtracker
>            Reporter: Devaraj Das
>            Assignee: Sharad Agarwal
>
> MAPREDUCE-817 added an API to get the JobHistory URL from the JobTracker. This is useful
in two ways:
> 1) Users can use this API to get the URL, copy the history files to their local disk,
and, do processing on them
> 2) APIs like JobSubmissionProtocol.getJobCounters, can read a part of the history file,
and then return the information to the caller (if the job is not there in JT memory). This
would  mimic most of the CompletedJobsStatusStore functionality.

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