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From "He Yongqiang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-1665) drop operations may cause file leak
Date Wed, 29 Sep 2010 18:29:33 GMT

     [ https://issues.apache.org/jira/browse/HIVE-1665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

He Yongqiang updated HIVE-1665:
-------------------------------

    Attachment: hive-1665.1.patch

> drop operations may cause file leak
> -----------------------------------
>
>                 Key: HIVE-1665
>                 URL: https://issues.apache.org/jira/browse/HIVE-1665
>             Project: Hadoop Hive
>          Issue Type: Bug
>            Reporter: He Yongqiang
>            Assignee: He Yongqiang
>         Attachments: hive-1665.1.patch
>
>
> Right now when doing a drop, Hive first drops metadata and then drops the actual files.
If file system is down at that time, the files will keep not deleted. 
> Had an offline discussion about this:
> to fix this, add a new conf "scratch dir" into hive conf. 
> when doing a drop operation:
> 1) move data to scratch directory
> 2) drop metadata
> 3) if 2) failed, roll back 1) and report error 3.1
>     if 2) succeeded, drop data from scratch directory 3.2
> 4) if 3.2 fails, we are ok because we assume the scratch dir will be emptied manually.

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