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https://issues.apache.org/jira/browse/HBASE-28064?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wellington Chevreuil updated HBASE-28064:
-----------------------------------------
Resolution: Fixed
Status: Resolved (was: Patch Available)
Thanks for the contribution, [~vjoshi]. This is now merged into master,
branch-3 and branch-2.
> Implement truncate_region command to truncate region directly from FS
> ---------------------------------------------------------------------
>
> Key: HBASE-28064
> URL: https://issues.apache.org/jira/browse/HBASE-28064
> Project: HBase
> Issue Type: New Feature
> Components: Admin, shell
> Affects Versions: 3.0.0-alpha-4, 2.5.6, 4.0.0-alpha-1
> Reporter: Ankit Singhal
> Assignee: Vaibhav Joshi
> Priority: Major
> Fix For: 2.6.0, 3.0.0-beta-1, 4.0.0-alpha-1
>
>
> One of our users has brought up a use-case where they need to truncate a
> region to delete data within a specific range. There are two scenarios to
> consider:
> * In the first scenario, the region boundaries involve a time range defined
> through pre-splitting, and user is looking to efficiently clean old date
> data. If HBase can directly truncate the region from the file system and then
> the user can merge the empty region with adjacent regions to effectively
> eliminate it which will be more optimized compared to deleting the data using
> Delete API.
> * In another case, if the HFile for that region becomes corrupted for some
> reason, user want to get rid of the HFile and reload the entire region to
> avoid consistency issues and ensure performance.
> we can do this by taking the region offline and taking write lock to avoid
> the consideration of race conditions involving Region In Transition (RITs),
> region re-opening, and merge/split scenarios.
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