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https://issues.apache.org/jira/browse/HIVE-2888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13252183#comment-13252183
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Kai Zhang commented on HIVE-2888:
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This has been fixed in HIVE-2086.
> Creating an external table using the 'LIKE' clause actually creates a managed
> table.
> ------------------------------------------------------------------------------------
>
> Key: HIVE-2888
> URL: https://issues.apache.org/jira/browse/HIVE-2888
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Affects Versions: 0.7.1
> Reporter: Craig Swift
> Original Estimate: 12h
> Remaining Estimate: 12h
>
> When creating a new table with both the EXTERNAL and LIKE clauses, the new
> table does not behave as an EXTERNAL table thus resulting in potential data
> loss.
> Example:
> create external table test1 (VAL string) location '/user/craig/test1';
> create external table test2 like test1 location '/user/craig/test2';
> drop table test1;
> /user/craig/test1 - still exists
> drop table test2;
> /user/craig/test2 - is deleted (bad)
> If I do an extended describe on both tables, test1 shows up as being external
> while test2 is a managed table.
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