[jira] [Commented] (HIVE-13050) The row count is not correct after changing partition location to point to another partition location

["Lenni Kuff (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-13050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15212818#comment-15212818 ] 

Lenni Kuff commented on HIVE-13050:
-----------------------------------

Do we even want to fix this? It seems much simpler and easier to understand the behavior if we do not de-dupe locations. There also may be existing users who expect the current behavior so it would be an incompatible change.  

> The row count is not correct after changing partition location to point to another partition location
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-13050
>                 URL: https://issues.apache.org/jira/browse/HIVE-13050
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>    Affects Versions: 2.1.0
>            Reporter: Aihua Xu
>            Assignee: Aihua Xu
>
> {noformat}
> CREATE  TABLE test  (s STRING) PARTITIONED BY (p SMALLINT) location 'data/test';
> INSERT INTO test PARTITION (`p`=1) VALUES ("v1");
> INSERT INTO test PARTITION (`p`=2) VALUES ("v2");
> ALTER TABLE test PARTITION (`p`=2) SET LOCATION '/data/test/p=1';
> {noformat}
> {{select * from test;}} shows 2 rows while {{SELECT count(*) FROM test;}} shows 1.
> That is inconsistent.



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