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From "Dick King (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (MAPREDUCE-1354) Incremental enhancements to the JobTracker for better scalability
Date Mon, 10 May 2010 23:23:31 GMT

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

Dick King reassigned MAPREDUCE-1354:
------------------------------------

    Assignee: Dick King  (was: Arun C Murthy)

> 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_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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