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https://issues.apache.org/jira/browse/HAMA-107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12648857#action_12648857
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Edward J. Yoon commented on HAMA-107:
-------------------------------------

Yes, I also thought like that. 

Additionally... In each map, we should know where given row belongs to. So, We 
may need to pre-computation as a setBlockPosition().



> Blocking job should be a map/reduce job
> ---------------------------------------
>
>                 Key: HAMA-107
>                 URL: https://issues.apache.org/jira/browse/HAMA-107
>             Project: Hama
>          Issue Type: Improvement
>          Components: implementation
>            Reporter: Edward J. Yoon
>             Fix For: 0.1.0
>
>
> DenseMatrix.blocking() used for build a blocked dense matrix. But, it should 
> be work on map/reduce to improve speed.

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