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From "Deepak Jaiswal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-19481) Tablesample uses incorrect logic to pick files corresponding to buckets.
Date Tue, 26 Jun 2018 06:07:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-19481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16523254#comment-16523254
] 

Deepak Jaiswal commented on HIVE-19481:
---------------------------------------

Committed to master, preparing for branch-3

Thanks [~sershe] for the review.

> Tablesample uses incorrect logic to pick files corresponding to buckets.
> ------------------------------------------------------------------------
>
>                 Key: HIVE-19481
>                 URL: https://issues.apache.org/jira/browse/HIVE-19481
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>    Affects Versions: 3.0.0
>            Reporter: Steve Yeom
>            Assignee: Deepak Jaiswal
>            Priority: Major
>             Fix For: 3.1.0, 4.0.0
>
>         Attachments: HIVE-19481.01-branch-3.patch, HIVE-19481.1.patch, HIVE-19481.2.patch,
HIVE-19481.3.patch, HIVE-19481.4.patch
>
>
> Ran "mvn test -Dtest=TestMiniLlapLocalCliDriver -Dqfile=sample10.q " after changing the
table to be 
> insert-only transactional. 
> The following queries returns couple of rows whereis no row results returns for non-ACID
table. 
> query: select ds, count(1) from srcpartbucket tablesample (bucket 2 out of 4 on key)
where ds is not null group by ds ORDER BY ds ASC
> 2008-04-08      14
> 2008-04-09      14
> ..
> query: select ds, count(1) from srcpartbucket tablesample (bucket 1 out of 2 on key)
where ds is not null group by ds ORDER BY ds ASC
> 2008-04-08      4
> 2008-04-09      4



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