[jira] Commented: (MAPREDUCE-1641) Job submission should fail if same uri is added for mapred.cache.files and mapred.cache.archives

["Dick King (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12867585#action_12867585 ] 

Dick King commented on MAPREDUCE-1641:
--------------------------------------

Should {{mapred.cache.libjars}} be checked too?

> 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, 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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