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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Work logged] (HIVE-15848) count or sum distinct incorrect when hive.optimize.reducededuplication set to true
Date Tue, 16 Jun 2020 16:58:02 GMT

     [ https://issues.apache.org/jira/browse/HIVE-15848?focusedWorklogId=446732&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-446732
]

ASF GitHub Bot logged work on HIVE-15848:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 16/Jun/20 16:57
            Start Date: 16/Jun/20 16:57
    Worklog Time Spent: 10m 
      Work Description: github-actions[bot] commented on pull request #150:
URL: https://github.com/apache/hive/pull/150#issuecomment-644888225


   This pull request has been automatically marked as stale because it has not had recent
activity. It will be closed if no further activity occurs.
   Feel free to reach out on the dev@hive.apache.org list if the patch is in need of reviews.


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Issue Time Tracking
-------------------

            Worklog Id:     (was: 446732)
    Remaining Estimate: 0h
            Time Spent: 10m

> count or sum distinct incorrect when hive.optimize.reducededuplication set to true
> ----------------------------------------------------------------------------------
>
>                 Key: HIVE-15848
>                 URL: https://issues.apache.org/jira/browse/HIVE-15848
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.13.0
>            Reporter: Biao Wu
>            Assignee: Zoltan Haindrich
>            Priority: Critical
>             Fix For: 2.3.0
>
>         Attachments: HIVE-15848.1.patch, HIVE-15848.2.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Test Table:
> {code:sql}
> create table test(id int,key int,name int);
> {code}
> Data:
> ||id||key||name||
> |1	|1	|2
> |1	|2	|3
> |1	|3	|2
> |1	|4	|2
> |1	|5	|3
> Test SQL1:
> {code:sql}
> select id,count(Distinct key),count(Distinct name)
> from (select id,key,name from count_distinct_test group by id,key,name)m
> group by id;
> {code}
> result:
> |1|5|4
> expect:
> |1|5|2
> Test SQL2:
> {code:sql}
> select id,count(Distinct name),count(Distinct key)
> from (select id,key,name from count_distinct_test group by id,name,key)m
> group by id;
> {code}
> result:
> |1|2|5



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