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https://issues.apache.org/jira/browse/HIVE-4121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Owen O'Malley resolved HIVE-4121.
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Resolution: Duplicate
I forgot I had filed this and filed the split apart on as HIVE-4244 and
HIVE-4245.
> 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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