[HBASE-23371] [HBCK2] Provide client side method for removing "ghost" regions in meta.

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: hbase-operator-tools-1.1.0
• Component/s: hbase-operator-tools
• Assignee: Wellington Chevreuil
• Reporter: Wellington Chevreuil
• Created: 05/Dec/19 15:44
• Updated: 13/Feb/21 05:20
• Resolved: 28/Jan/20 11:56

Description

We found some customers facing problems where region entries are present in meta, but no related region dir is available on the underlying files system. The actual cause couldn't be confirmed with certainty, and this was happening on a cluster version that doesn't support server side fixMeta command. Ultimately, solution was to manual delete the extra regions from meta.

This ticket proposes two new client side commands for HBCK2, similar to the already existing addFsRegionsMissingInMeta and reportMissingRegionsInMeta, for finding and cleaning out meta from inconsistent state, when no fixMeta is available (which is the case for any version prior to "2.0.6", "2.1.6", "2.2.1", "2.3.0","3.0.0").

Issue Links

• links to: GitHub Pull Request #45