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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-1302) TrackerDistributedCacheManager can delete file asynchronously
Date Wed, 16 Dec 2009 07:44:18 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1302?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Zheng Shao updated MAPREDUCE-1302:

    Attachment: MAPREDUCE-1302.0.patch

This patch includes MAPREDUCE-1213. It's just for demo purpose.

> TrackerDistributedCacheManager can delete file asynchronously
> -------------------------------------------------------------
>                 Key: MAPREDUCE-1302
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1302
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>         Attachments: MAPREDUCE-1302.0.patch
> With the help of AsyncDiskService from MAPREDUCE-1213, we should be able to delete files
from distributed cache asynchronously.
> That will help make task initialization faster, because task initialization calls the
code that localizes files into the cache and may delete some other files.
> The deletion can slow down the task initialization speed.

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