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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2600) MR-279: simplify the jars
Date Thu, 11 Aug 2011 16:19:29 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13083202#comment-13083202
] 

Owen O'Malley commented on MAPREDUCE-2600:
------------------------------------------

It is a big issue for downstream users. Projects that use Hadoop already pick up a lot of
jars and increasing the set when all of the versions are the same is a problem. We'll also
have users using different versions of the jars, which won't be useful.

Having a source structure that requires an IDE to use isn't making the code easy for people
to browse, use and modify. It will also become a maintenance problem as the dependency graph
between the components change.

Yes, you can munge the results together into a single jar as part of the build, but I don't
see how it makes development easier or faster to have lots of little directories. 

That said, I don't have cycles to do the work right now. If no one else does either, we can
postpone the debate.

> MR-279: simplify the jars 
> --------------------------
>
>                 Key: MAPREDUCE-2600
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2600
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Owen O'Malley
>            Assignee: Luke Lu
>
> Currently the MR-279 mapreduce project generates 59 jars from 59 source roots, which
can be dramatically simplified.

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