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From "Edward J. Yoon (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HAMA-63) DenseVector seems can't be writable
Date Mon, 22 Sep 2008 15:08:44 GMT

     [ https://issues.apache.org/jira/browse/HAMA-63?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Edward J. Yoon resolved HAMA-63.
--------------------------------

    Resolution: Won't Fix

This issue will be handled on HAMA-67.

> DenseVector seems can't be writable 
> ------------------------------------
>
>                 Key: HAMA-63
>                 URL: https://issues.apache.org/jira/browse/HAMA-63
>             Project: Hama
>          Issue Type: Improvement
>          Components: mapred 
>            Reporter: Edward J. Yoon
>            Assignee: Edward J. Yoon
>             Fix For: 0.1.0
>
>
> DenseVector have an operation methods. BTW, it will be overwrited by iterator.next()
while run on the map/reduce. So, first.equals(second) returns true as below. It's a problematic.
>   public void reduce(IntWritable key, Iterator<DenseVector> values,
>       OutputCollector<IntWritable, VectorUpdate> output, Reporter reporter)
>       throws IOException {
>     DenseVector first = values.next(); 
>     DenseVector second = values.next();
>     first.equals(second); // true
>   }

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