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https://issues.apache.org/jira/browse/HAMA-153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12674533#action_12674533
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Samuel Guo commented on HAMA-153:
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thank you, edward.
BTW, should we need a test case for addition-check?
> Need some condition-check before matrix algebra
> -----------------------------------------------
>
> Key: HAMA-153
> URL: https://issues.apache.org/jira/browse/HAMA-153
> Project: Hama
> Issue Type: Bug
> Components: implementation
> Affects Versions: 0.1.0
> Reporter: Samuel Guo
> Priority: Minor
> Fix For: 0.1.0
>
> Attachments: HAMA-153.patch, HAMA-153_v02.patch, HAMA-153_v03.patch
>
>
> some conditions will be checked before we construct the result matrix and
> compose the matrix algebra map/reduce job.
> for examples,
> A + B, we need check that A.rows = B.rows & A.columns = B.columns
> A * B, we need check that A.columns = B.rows.
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