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From "Patrick Kling (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-2142) Refactor RaidNode to remove dependence on map reduce
Date Tue, 02 Nov 2010 23:08:25 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2142?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Patrick Kling updated MAPREDUCE-2142:
-------------------------------------

    Attachment: MAPREDUCE-2142.3.patch

Use a DummyProgressable instead of null.

> Refactor RaidNode to remove dependence on map reduce
> ----------------------------------------------------
>
>                 Key: MAPREDUCE-2142
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2142
>             Project: Hadoop Map/Reduce
>          Issue Type: Task
>            Reporter: Patrick Kling
>         Attachments: MAPREDUCE-2142.2.patch, MAPREDUCE-2142.3.patch, MAPREDUCE-2142.patch
>
>
> I am refactoring the RaidNode code as follows: The base class RaidNode will contain the
common functionality needed for raiding files. The derived class LocalRaidNode contains an
implementation of RaidNode that performs raiding locally. The derived class DistRaidNode performs
raiding using map reduce jobs. This way, only DistRaidNode has a dependency on map reduce
code and RaidNode and LocalRaidNode can be moved to HDFS.

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