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https://issues.apache.org/jira/browse/HIVE-4324?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kevin Wilfong updated HIVE-4324:
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Attachment: HIVE-4324.1.patch.txt
> ORC Turn off dictionary encoding when number of distinct keys is greater than
> threshold
> ---------------------------------------------------------------------------------------
>
> Key: HIVE-4324
> URL: https://issues.apache.org/jira/browse/HIVE-4324
> Project: Hive
> Issue Type: Sub-task
> Components: Serializers/Deserializers
> Affects Versions: 0.11.0
> Reporter: Kevin Wilfong
> Assignee: Kevin Wilfong
> Attachments: HIVE-4324.1.patch.txt
>
>
> Add a configurable threshold so that if the number of distinct values in a
> string column is greater than that fraction of non-null values, dictionary
> encoding is turned off.
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