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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1641) Job submission should fail if same uri is added for mapred.cache.files and mapred.cache.archives
Date Tue, 08 Jun 2010 11:17:11 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876629#action_12876629

Amareshwari Sriramadasu commented on MAPREDUCE-1641:

latest patch looks fine.

> Job submission should fail if same uri is added for mapred.cache.files and mapred.cache.archives
> ------------------------------------------------------------------------------------------------
>                 Key: MAPREDUCE-1641
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1641
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: distributed-cache
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Dick King
>             Fix For: 0.22.0
>         Attachments: BZ-3539321--off-0-20-101--2010-04-20.patch, duped-files-archives--off-0-20-101--2010-04-21.patch,
duped-files-archives--off-0-20-101--2010-04-23--1819.patch, mapreduce-1641--2010-04-27.patch,
mapreduce-1641--2010-05-19.patch, mapreduce-1641--2010-05-21.patch, patch-1641-ydist-bugfix.txt
> The behavior of mapred.cache.files and mapred.cache.archives is different during localization
in the following way:
> If a jar file is added to mapred.cache.files,  it will be localized under TaskTracker
under a unique path. 
> If a jar file is added to mapred.cache.archives, it will be localized under a unique
path in a directory named the jar file name, and will be unarchived under the same directory.
> If same jar file is passed for both the configurations, the behavior undefined. Thus
the job submission should fail.
> Currently, since distributed cache processes files before archives, the jar file will
be just localized and not unarchived.

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