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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-1354) Incremental enhancements to the JobTracker for better scalability
Date Fri, 14 May 2010 05:06:45 GMT

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

Amareshwari Sriramadasu updated MAPREDUCE-1354:
-----------------------------------------------

    Status: Open  (was: Patch Available)

Patch looks fine.
Canceling patch to submit for hudson, as trunk compiles now.

> 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: Dick King
>            Priority: Critical
>         Attachments: mapreduce-1354--2010-03-10.patch, mapreduce-1354--2010-05-13.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,
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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