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https://issues.apache.org/jira/browse/HBASE-6205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13400944#comment-13400944
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Devaraj Das commented on HBASE-6205:
------------------------------------
Would this work:
1. Have the delete command simply disable the table (flag with disable_delete
or something and record it in ZK)
2. Have the master periodically check for disable_delete table flags and if a
table was disabled for more than 24 hours (say), then the master deletes the
table
3. If (1) was done in error, then an 'undelete' command could simply reenable
the table within the 24 hour period & delete the ZK entry (of course these
operations needs to be done carefully to avoid races).
> 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, HBASE-6205v5.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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