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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-11319) CTAS with location qualifier overwrites directories
Date Mon, 03 Aug 2015 17:12:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-11319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14652129#comment-14652129
] 

Hive QA commented on HIVE-11319:
--------------------------------



{color:red}Overall{color}: -1 no tests executed

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12748452/HIVE-11319.2.patch

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/4802/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/4802/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-4802/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Tests exited with: ExecutionException: java.io.IOException: Could not create /data/hive-ptest/logs/PreCommit-HIVE-TRUNK-Build-4802/succeeded/TestHCatHiveCompatibility
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12748452 - PreCommit-HIVE-TRUNK-Build

> CTAS with location qualifier overwrites directories
> ---------------------------------------------------
>
>                 Key: HIVE-11319
>                 URL: https://issues.apache.org/jira/browse/HIVE-11319
>             Project: Hive
>          Issue Type: Bug
>          Components: Parser
>    Affects Versions: 0.14.0, 1.0.0, 1.2.0
>            Reporter: Yongzhi Chen
>            Assignee: Yongzhi Chen
>         Attachments: HIVE-11319.1.patch, HIVE-11319.2.patch
>
>
> CTAS with location clause acts as an insert overwrite. This can cause problems when there
sub directories with in a directory.
> This cause some users accidentally wipe out directories with very important data. We
should  ban CTAS with location to a non-empty directory. 
> Reproduce:
> create table ctas1  
> location '/Users/ychen/tmp' 
> as 
> select * from jsmall limit 10;
> create table ctas2  
> location '/Users/ychen/tmp' 
> as 
> select * from jsmall limit 5;
> Both creates will succeed. But value in table ctas1 will be replaced by ctas2 accidentally.




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