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From "Jake Mannix (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAHOUT-205) Pull Writable (and anything else hadoop dependent) out of the matrix module
Date Wed, 06 Jan 2010 17:33:56 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12797192#action_12797192
] 

Jake Mannix commented on MAHOUT-205:
------------------------------------

Ok, blew away ~/.m2, clean checkout with the later patch applied, and "mvn clean compile"
ends with BUILD SUCCESSFUL (after 17m 9s, oof!).  Anyone else try this patch to see if you
see what Sean saw?

> Pull Writable (and anything else hadoop dependent) out of the matrix module
> ---------------------------------------------------------------------------
>
>                 Key: MAHOUT-205
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-205
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Math
>    Affects Versions: 0.1
>         Environment: all
>            Reporter: Jake Mannix
>            Assignee: Jake Mannix
>            Priority: Minor
>             Fix For: 0.3
>
>         Attachments: MAHOUT-205.patch, MAHOUT-205.patch
>
>
> Vector and Matrix extend Writable, and while that was merely poorly coupled before, it
will be an actual problem now that we have a separate submodule for matrix: this module should
not depend on hadoop at all, ideally.   Distributed matrix work, as well as simply Writable
wrappers can go somewhere else (where?  core?  yet another submodule which depends on matrix?),
but it would be really nice if we could produce an artifact which doesn't require Hadoop which
has our core linear primitives.

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