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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-1354) Incremental enhancements to the JobTracker for better scalability
Date Thu, 25 Feb 2010 15:17:28 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1354?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hemanth Yamijala updated MAPREDUCE-1354:
----------------------------------------

    Attachment: mr-1354-y20.patch

More updated patch for earlier version of hadoop. Not for commit here.

> Incremental enhancements to the JobTracker for better scalability
> -----------------------------------------------------------------
>
>                 Key: MAPREDUCE-1354
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1354
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>            Reporter: Devaraj Das
>            Assignee: Arun C Murthy
>            Priority: Critical
>         Attachments: MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch,
MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch,
MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch, mr-1354-y20.patch
>
>
> It'd be nice to have the JobTracker object not be locked while accessing the HDFS for
reading the jobconf file and while writing the jobinfo file in the submitJob method. We should
see if we can avoid taking the lock altogether.

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