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From Dogacan Güney (JIRA) <j...@apache.org>
Subject [jira] Created: (NUTCH-420) DeleteDuplicates.HashPartitioner depends on the order of IndexDocs
Date Tue, 26 Dec 2006 11:30:20 GMT
DeleteDuplicates.HashPartitioner depends on the order of IndexDocs
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                 Key: NUTCH-420
                 URL: http://issues.apache.org/jira/browse/NUTCH-420
             Project: Nutch
          Issue Type: Bug
          Components: indexer
    Affects Versions: 0.9.0
            Reporter: Dogacan Güney
            Priority: Minor


DeleteDuplicates.HashPartitioner.reduce():

// byScore case
if (value.score > highest.score) {
  highest.keep = false;
  LOG.debug("-discard " + highest + ", keep " + value);
  output.collect(highest.url, highest);     // delete highest
  highest = value;
}
// !byScore is also similar

So assume two docs with same hash are in values.If the first has higher score than the second
than second doc will be deleted. But if the first has lower score than the second then none
will be deleted. AFAICS, there should be an else condition to delete value and keep highest
as it is.

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