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https://issues.apache.org/jira/browse/HIVE-446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12863193#action_12863193
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Adam Kramer commented on HIVE-446:
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Another note: Sometimes I shut off hive.merge.mapfiles; because the extra
mapreduce step really isn't worth it given that I'm effectively creating a temp
table that I don't need to use again. The result is a lot of unnecessary inode
usage, because I only need those inodes for one more query.
If I had this option, I would turn off hive.merge.mapfiles;, run my query, run
the dependent query, and then truncate the first table to save inodes.
> Implement TRUNCATE
> ------------------
>
> Key: HIVE-446
> URL: https://issues.apache.org/jira/browse/HIVE-446
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
> Reporter: Prasad Chakka
> Fix For: 0.4.2
>
>
> truncate the data but leave the table and metadata intact.
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