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Posted to issues@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2018/10/21 20:45:00 UTC

[jira] [Updated] (HIVE-20490) UDAF: Add an 'approx_distinct' to Hive

     [ https://issues.apache.org/jira/browse/HIVE-20490?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gopal V updated HIVE-20490:
---------------------------
    Summary: UDAF: Add an 'approx_distinct' to Hive  (was: UDAF: Add an `approx_distinct` to Hive)

> 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, HIVE-20490.2.patch, HIVE-20490.2.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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