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https://issues.apache.org/jira/browse/HBASE-6613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack resolved HBASE-6613.
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Resolution: Duplicate
Resolving in favor of the work over in HBASE-13103
> Automatically merge empty regions
> ---------------------------------
>
> Key: HBASE-6613
> URL: https://issues.apache.org/jira/browse/HBASE-6613
> Project: HBase
> Issue Type: New Feature
> Components: master, regionserver, util
> Affects Versions: 0.94.1
> Reporter: Ionut Ignatescu
>
> Consider an usecase where row keys has an increasing value(time-series data
> for example) and data retention is set to a concrete value(60 days for
> example).
> After a period of time, longer than retention, empty regions will appear.
> This will cause high memory use on region servers.
> In my opinion, regions merge could be part of major compaction or another
> tool should be provided. From my understading, it is possible to merge 2
> empty regions without make table offline, but it's not possible to merge one
> empty region with a non-empty region without close/unassing this regions.
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