[HBASE-23697] Document new RegionProcedureStore operation and migration

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 3.0.0-alpha-1, 2.3.0
• Component/s: documentation
• Hadoop Flags: Reviewed
• Assignee: Michael Stack
• Reporter: Michael Stack
• Created: 15/Jan/20 22:34
• Updated: 16/Apr/20 17:47
• Resolved: 16/Apr/20 17:47

Description

Add a few notes to the refguide on the new RegionProcedureStore, how it works (A 'Region' but buried in the Master with dedicated flushing/compacting threads and archivers for WAL and hfile), how it differs from WALPS, and note it auto-migrates and there should be new issue moving on to the new store.

Mention the configuration. Mention it is on WALFS even though it is a 'Region', etc.

Issue Links

• links to: GitHub Pull Request #1517