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From "Alexander Yastrebov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (NUTCH-2029) Mark.checkMark returns empty string when null is expected with mongodb storage
Date Mon, 01 Jun 2015 15:46:17 GMT
Alexander Yastrebov created NUTCH-2029:
------------------------------------------

             Summary: Mark.checkMark returns empty string when null is expected with mongodb
storage
                 Key: NUTCH-2029
                 URL: https://issues.apache.org/jira/browse/NUTCH-2029
             Project: Nutch
          Issue Type: Bug
          Components: storage
    Affects Versions: 2.3
            Reporter: Alexander Yastrebov


Gora mongodb backend return empty Utf8 for null field values.
This leads to Mark.checkMark never returns null, so multiple checks on null fail e.g. in DbUpdateMapper,
GeneratorMapper etc.

Temporal fix is to check whether value is null or empty

https://github.com/newpointer/nutch/commit/4bdc0bab39ede7c01ee057c3429f5f0e90d5e48f
See https://issues.apache.org/jira/browse/GORA-423




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