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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 Tue, 12 Jan 2010 17:57:54 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12799293#action_12799293
] 

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

It's not byet committed, because I was hoping at least one other person besides Drew could
verify it builds properly... the patch might be a tiny bit out of date now, I'll check in
a bit when I get to work.

> 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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