Kevin Wilfong created HIVE-4324:
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Summary: 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
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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