[HBASE-23562] [operator tools] Add a RegionsMerge tool that allows for merging multiple adjacent regions until a desired number of regions is reached.

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: hbase-operator-tools-1.1.0
• Component/s: hbase-operator-tools
• Hadoop Flags: Reviewed
• Assignee: Wellington Chevreuil
• Reporter: Wellington Chevreuil
• Created: 11/Dec/19 14:32
• Updated: 18/Nov/22 21:14
• Resolved: 10/Apr/20 19:02

Description

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.

Issue Links

• relates to: HBASE-27497 Add a note for RegionMerge tool.
• links to: GitHub Pull Request #46
• links to: GitHub Pull Request #56