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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ORC-49) Improve decimal encoding to use RLE
Date Fri, 22 Apr 2016 16:42:13 GMT
Owen O'Malley created ORC-49:
--------------------------------

             Summary: Improve decimal encoding to use RLE
                 Key: ORC-49
                 URL: https://issues.apache.org/jira/browse/ORC-49
             Project: Orc
          Issue Type: Bug
            Reporter: Owen O'Malley


Because decimal was added in Hive 0.11 with no maximum precision, the ORC encoding for decimal
uses arbitrary var ints. Since Hive 0.12, the maximum precision for decimals fits in 128 bits
and thus we can use a much better encoding using the long rle.



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