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From "Bharath Mundlapudi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-2415) Distribute TaskTracker userlogs onto multiple disks
Date Fri, 08 Apr 2011 21:44:05 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2415?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bharath Mundlapudi updated MAPREDUCE-2415:
------------------------------------------

    Attachment: MAPREDUCE-2415-2.patch

> Distribute TaskTracker userlogs onto multiple disks
> ---------------------------------------------------
>
>                 Key: MAPREDUCE-2415
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2415
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: task-controller, tasktracker
>    Affects Versions: 0.20.204.0
>            Reporter: Bharath Mundlapudi
>            Assignee: Bharath Mundlapudi
>             Fix For: 0.20.204.0
>
>         Attachments: MAPREDUCE-2415-1.patch, MAPREDUCE-2415-2.patch, TaskTracker Userlogs
Design.pdf
>
>
> Currently, userlogs directory in TaskTracker is placed under hadoop.log.dir like <hadoop.log.dir>/userlogs.
I am proposing to spread these userlogs onto multiple configured mapred.local.dirs to strengthen
TaskTracker reliability w.r.t disk failures.  

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