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https://issues.apache.org/jira/browse/HIVE-3134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13294798#comment-13294798
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Carl Steinbach commented on HIVE-3134:
--------------------------------------
On a related note, what happens if you create a managed table and modify it's
location to point to the storage location of another managed table? Will Hive
let you do this, and if so, can you use this trick to delete someone else's
table data?
> Drop table/index/database can result in orphaned locations
> ----------------------------------------------------------
>
> Key: HIVE-3134
> URL: https://issues.apache.org/jira/browse/HIVE-3134
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Reporter: Kevin Wilfong
> Assignee: Kevin Wilfong
> Attachments: HIVE-3134.1.patch.txt
>
>
> Today when a managed table has a partition with a location which is not a
> subdirectory of the table's location, when the table is dropped the
> partition's data is not deleted from HDFS, resulting in an orphaned directory
> (the data exists but nothing points to it).
> The same applies to dropping a database with cascade and a table has a
> location outside the database.
> I think it is safe to assume managed tables/partitions own the directories
> they point to, so we should clean these up.
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