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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2483) Clean up duplication of dependent jar files
Date Fri, 13 May 2011 16:36:47 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13033118#comment-13033118
] 

Eric Yang commented on MAPREDUCE-2483:
--------------------------------------

Nicholas, I have a patch for hdfs in HDFS-1917.  It would be really helpful, if you can review
it.  Thanks

> Clean up duplication of dependent jar files
> -------------------------------------------
>
>                 Key: MAPREDUCE-2483
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2483
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: build
>    Affects Versions: 0.23.0
>            Reporter: Eric Yang
>
> For trunk, the build and deployment tree look like this:
> hadoop-common-0.2x.y
> hadoop-hdfs-0.2x.y
> hadoop-mapred-0.2x.y
> Technically, mapred's the third party dependent jar files should be fetch from hadoop-common
and hadoop-hdfs.  However, it is currently fetching from hadoop-mapred/lib only.  It would
be nice to eliminate the need to repeat duplicated jar files at build time.
> There are two options to manage this dependency list, continue to enhance ant build structure
to fetch and filter jar file dependencies using ivy.  On the other hand, it would be a good
opportunity to convert the build structure to maven, and use maven to manage the provided
jar files.

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