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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-4121) ORC should have optional dictionaries for both strings and numeric types
Date Tue, 05 Mar 2013 17:50:14 GMT

     [ https://issues.apache.org/jira/browse/HIVE-4121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Owen O'Malley updated HIVE-4121:
--------------------------------

    Description: Currently string columns always have dictionaries and numerics are always
directly encoded. It would be better to make the encoding depend on a sample of the data.
Perhaps the first 100k values should be evaluated for repeated values and the encoding picked
for the stripe.
    
> ORC should have optional dictionaries for both strings and numeric types
> ------------------------------------------------------------------------
>
>                 Key: HIVE-4121
>                 URL: https://issues.apache.org/jira/browse/HIVE-4121
>             Project: Hive
>          Issue Type: New Feature
>          Components: Serializers/Deserializers
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>
> Currently string columns always have dictionaries and numerics are always directly encoded.
It would be better to make the encoding depend on a sample of the data. Perhaps the first
100k values should be evaluated for repeated values and the encoding picked for the stripe.

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