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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16415) Add blobstore tests for insertion of zero rows
Date Tue, 11 Apr 2017 20:46:42 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15964940#comment-15964940
] 

Ashutosh Chauhan commented on HIVE-16415:
-----------------------------------------

I did little bit more testing on this, taking an example query from HIVE-14519 and modified
it as following:
{code}
>From (select * from src) a
insert overwrite directory '/tmp/emp/dir1/'
select key, value
insert overwrite directory '/tmp/emp/dir2/'
select 'header'
limit 0
insert overwrite directory '/tmp/emp/dir3/'
select key, value 
where key = 100;
{code}

This gives incorrect result in master. All dirs end up with 0 rows instead of just dir2. I
think fix in HIVE-14519 is incomplete.

> Add blobstore tests for insertion of zero rows
> ----------------------------------------------
>
>                 Key: HIVE-16415
>                 URL: https://issues.apache.org/jira/browse/HIVE-16415
>             Project: Hive
>          Issue Type: Test
>          Components: Tests
>    Affects Versions: 2.1.1
>            Reporter: Thomas Poepping
>            Assignee: Thomas Poepping
>         Attachments: HIVE-16415.patch
>
>
> This patch introduces two regression tests into the hive-blobstore qtest module: zero_rows_hdfs.q
and zero_rows_blobstore.q. These test doing INSERT commands with a WHERE clause where the
condition of the WHERE clause causes zero rows to be considered.



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