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https://issues.apache.org/jira/browse/HIVE-20490?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gopal V updated HIVE-20490:
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Status: Patch Available (was: Open)
> UDAF: Add an `approx_distinct` to Hive
> --------------------------------------
>
> Key: HIVE-20490
> URL: https://issues.apache.org/jira/browse/HIVE-20490
> Project: Hive
> Issue Type: Improvement
> Components: UDF
> Affects Versions: 4.0.0
> Reporter: Gopal V
> Assignee: Gopal V
> Priority: Major
> Attachments: HIVE-20490.1.patch
>
>
> This gives a direct pathway to call the equivalent of Hive's default
> compute_stats() UDAF which computes a HyperLogLog bitVector + approx distinct
> on a column.
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