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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-2539) SummingCombiner does not adhere to Combiner#COLUMNS_OPTION
Date Mon, 24 Mar 2014 17:14:44 GMT
Josh Elser created ACCUMULO-2539:
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             Summary: SummingCombiner does not adhere to Combiner#COLUMNS_OPTION
                 Key: ACCUMULO-2539
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2539
             Project: Accumulo
          Issue Type: Bug
          Components: client
            Reporter: Josh Elser
            Assignee: Josh Elser
             Fix For: 1.6.0


In testing out the SummingCombiner, I set the Combiner#COLUMNS_OPTION which led me to believe
that the SummingCombiner would limit columns to the set that is provided as an option through
the IteratorSetting.

In practice, this was not the case as Combiner#findTop isn't used, and thus that column list
is not adhered to. I can get the expected functionality out of SummingCombiner by calling
{{ScannerBase#fetchColumn}} or {{ScannerBase#fetchColumnFamily}}.



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