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Posted to dev@avro.apache.org by "Thiruvalluvan M. G. (JIRA)" <ji...@apache.org> on 2018/12/30 04:18:02 UTC

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

     [ https://issues.apache.org/jira/browse/AVRO-1194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thiruvalluvan M. G. updated AVRO-1194:
--------------------------------------
    Component/s: java

> trevni should support delta encoding based on selectivity and data type
> -----------------------------------------------------------------------
>
>                 Key: AVRO-1194
>                 URL: https://issues.apache.org/jira/browse/AVRO-1194
>             Project: Apache Avro
>          Issue Type: Improvement
>          Components: java
>    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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