[HBASE-26230] Start an in process HRegionServer in maintenance mode

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-2
• Component/s: master
• Hadoop Flags: Reviewed
• Release Note: When enabling maintenance mode, now we will start an in process region server instead of letting HMaster carry the system regions.
• Assignee: Duo Zhang
• Reporter: Duo Zhang
• Created: 27/Aug/21 15:59
• Updated: 13/Sep/21 02:07
• Resolved: 03/Sep/21 09:08

Description

So HMaster do not need to carry regions in maintenance mode, then we can finally decouple HMaster and HRegionServer.

Issue Links

• links to: GitHub Pull Request #3659