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https://issues.apache.org/jira/browse/HIVE-1665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12913880#action_12913880
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Namit Jain commented on HIVE-1665:
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By default, the scratch dir can be based on date etc. so that it can be easily
cleaned up
> 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
>
> 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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