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https://issues.apache.org/jira/browse/HBASE-23562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16993785#comment-16993785
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Zach York commented on HBASE-23562:
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Not that this blocks this tool from going in, but should we consider adding
this functionality natively? It seems like something HBase should handle if
data is deleted (Regions falling below a certain size would be eligible - could
also have a configurable Policy like we do for splits).
> [operator tools] Add a RegionsMerge tool that allows for merging multiple
> adjacent regions until a desired number of regions is reached.
> ----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-23562
> URL: https://issues.apache.org/jira/browse/HBASE-23562
> Project: HBase
> Issue Type: New Feature
> Reporter: Wellington Chevreuil
> Assignee: Wellington Chevreuil
> Priority: Minor
>
> There's been a few occasions where different customers had faced the need to
> reduce the number of regions for specific tables, either due to mistakenly
> pre-split or after a purge in table data. This jira is for adding a simple
> merge tool that takes the table name and the desired number of regions, then
> perform region merges until the total number of regions for the given table
> reached the passed valued.
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