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Posted to dev@avro.apache.org by "alex gemini (JIRA)" <ji...@apache.org> on 2012/11/06 14:56:11 UTC

[jira] [Created] (AVRO-1194) trevni should support delta encoding based on selectivity and data type

alex gemini created AVRO-1194:
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             Summary: trevni should support delta encoding based on selectivity and data type
                 Key: AVRO-1194
                 URL: https://issues.apache.org/jira/browse/AVRO-1194
             Project: Avro
          Issue Type: Improvement
    Affects Versions: 1.8.0
            Reporter: alex gemini
            Priority: Minor


it would be nice if trevni support delta encoding. columnar format should first sort the columnar order based on selectivity .for middle selectivity column such as timestamp trenvi should support delta encoding.more information will be found in paper "C-Store: A Column-oriented DBMS" section 3.1 :Encoding Schemes ,type 3

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