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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAHOUT-809) Bad bug in ChunkedWriter
Date Wed, 14 Sep 2011 14:02:09 GMT

     [ https://issues.apache.org/jira/browse/MAHOUT-809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Owen resolved MAHOUT-809.
------------------------------

       Resolution: Fixed
    Fix Version/s: 0.6
         Assignee: Sean Owen

> Bad bug in ChunkedWriter
> ------------------------
>
>                 Key: MAHOUT-809
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-809
>             Project: Mahout
>          Issue Type: Bug
>          Components: Clustering
>    Affects Versions: 0.5, 0.6
>         Environment: Occurred on single node, not tested on cluster.
>            Reporter: Florian Bausch
>            Assignee: Sean Owen
>             Fix For: 0.6
>
>   Original Estimate: 0.25h
>  Remaining Estimate: 0.25h
>
> org.apache.mahout.text.ChunkedWriter has a bug, that causes data loss, if the maximal
chunk size is reached. The first chunk is overwritten, then it continues normally.
> This is caused in line 58:
> writer = new SequenceFile.Writer(fs, conf, getPath(currentChunkID++), Text.class, Text.class);
> The fix should look like this:
> writer = new SequenceFile.Writer(fs, conf, getPath(++currentChunkID), Text.class, Text.class);

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