[jira] [Commented] (HIVE-2086) Data loss with external table

["Ning Zhang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-2086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13027424#comment-13027424 ] 

Ning Zhang commented on HIVE-2086:
----------------------------------

+1


> Data loss with external table
> -----------------------------
>
>                 Key: HIVE-2086
>                 URL: https://issues.apache.org/jira/browse/HIVE-2086
>             Project: Hive
>          Issue Type: Bug
>          Components: Metastore
>    Affects Versions: 0.7.0
>         Environment: Amazon  elastics mapreduce cluster
>            Reporter: Q Long
>            Assignee: Jonathan Natkins
>         Attachments: HIVE-2086.1.patch, HIVE-2086.2.patch
>
>
> Data loss when using "create external table like" statement. 
> 1) Set up an external table S, point to location L. Populate data in S.
> 2) Create another external table T, using statement like this:
>     create external table T like S location L
>    Make sure table T point to the same location as the original table S.
> 3) Query table T, see the same set of data in S.
> 4) drop table T.
> 5) Query table S will return nothing, and location L is deleted. 

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