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From "Vladimir Klimontovich (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-752) DistributedCache.addArchiveToClassPath doesn't work
Date Sun, 12 Jul 2009 13:37:14 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Vladimir Klimontovich updated MAPREDUCE-752:

    Attachment: MAPREDUCE-752.patch

Attached patch fixes this problem and adds junit-test for it

> DistributedCache.addArchiveToClassPath doesn't work
> ---------------------------------------------------
>                 Key: MAPREDUCE-752
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-752
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Vladimir Klimontovich
>         Attachments: MAPREDUCE-752.patch, MAPREDUCE-752.zip
> addArchiveToClassPath is a method of DistributedCache class. It should be called before
running a task. It accepts path to a jar file on a DFS. After it
> this method should put this jar file on sitribuuted cache and than add this file to classpath
to each map/reduce process on job tracker. 
> This method don't work:
> in TaskRunner there is an algorithm that looks for correspondence between DFS paths and
local paths in distributed cache.
> It compares
> if (archives[i].getPath().equals(
> archiveClasspaths[j].toString())){
> instead of
> if (archives[i].toString().equals(
> archiveClasspaths[j].toString())) 

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