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https://issues.apache.org/jira/browse/HBASE-10309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13893670#comment-13893670
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Lars Hofhansl commented on HBASE-10309:
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Can't we reuse the hbck code in a more targeted way for a specific known region
that is known ahead of time to be empty (and it won't be written to or split,
etc)?
I fear that this will come up over and over again with folks that store event
data that is access in a most-recent-only way and eventually will be purged;
and this is otherwise a compelling usecase for HBase.
There are other ways around this (salting, prefix hashing, bounded time
windows, etc) but all of those have other drawbacks.
> Add support to delete empty regions in 0.94.x series
> ----------------------------------------------------
>
> Key: HBASE-10309
> URL: https://issues.apache.org/jira/browse/HBASE-10309
> Project: HBase
> Issue Type: New Feature
> Reporter: AcCud
> Fix For: 0.94.17
>
>
> My use case: I have several tables where keys start with a timestamp. Because
> of this and combined with the fact that I have set a 15 days retention
> period, after a period of time results empty regions.
> I am sure that no write will occur in these region.
> It would be nice to have a tool to delete regions without being necessary to
> stop the cluster.
> The easiest way for me is to have a tool that is able to delete all empty
> regions, but there wouldn't be any problem to specify which region to delete.
> Something like:
> deleteRegion <tableName> <region>
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