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https://issues.apache.org/jira/browse/TAJO-304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13841056#comment-13841056
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Jinho Kim commented on TAJO-304:
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+1
Looks great for me. I've verified tajo cli
> drop table command should not remove data files in default
> ----------------------------------------------------------
>
> Key: TAJO-304
> URL: https://issues.apache.org/jira/browse/TAJO-304
> Project: Tajo
> Issue Type: Improvement
> Components: catalog, master
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Fix For: 0.8-incubating
>
> Attachments: TAJO-304.patch
>
>
> h3. Problem
> In the current implementation, Tajo removes a data directory when a user
> issues 'drop table' command. But, it is very dangerous in many cases. For
> example, some users may lost large data sets.
> h3. Solution
> In default, 'DROP TABLE' should not remove a data directory. -, and we need
> to add a config property 'tajo.command.drop_table.data_removal' for those who
> want to change the behavior of 'drop table'.- In addition, Tajo should
> provide 'DROP TABLE table_name PURGE' for removing all data.
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