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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6205) Support an option to keep data of dropped table for some time
Date Tue, 26 Jun 2012 08:41:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13401245#comment-13401245

ramkrishna.s.vasudevan commented on HBASE-6205:

bq.if we set table disable_delete, could user see this table?
I think here the user should be able to see until the table is really deleted. 
bq.create the table with the same name, is it will something wrong?
If drop is done completely then we should allow the table creation with same name.  Maybe
till then we should not allow.  Just my thoughts on this.  

> Support an option to keep data of dropped table for some time
> -------------------------------------------------------------
>                 Key: HBASE-6205
>                 URL: https://issues.apache.org/jira/browse/HBASE-6205
>             Project: HBase
>          Issue Type: New Feature
>    Affects Versions: 0.94.0, 0.96.0
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>             Fix For: 0.96.0
>         Attachments: HBASE-6205.patch, HBASE-6205v2.patch, HBASE-6205v3.patch, HBASE-6205v4.patch,
> User may drop table accidentally because of error code or other uncertain reasons.
> Unfortunately, it happens in our environment because one user make a mistake between
production cluster and testing cluster.
> So, I just give a suggestion, do we need to support an option to keep data of dropped
table for some time, e.g. 1 day
> In the patch:
> We make a new dir named .trashtables in the rood dir.
> In the DeleteTableHandler, we move files in dropped table's dir to trash table dir instead
of deleting them directly.
> And Create new class TrashCleaner which will clean dropped tables if it is time out with
a period check.
> Default keep time for dropped tables is 1 day, and check period is 1 hour.

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