[HBASE-19500] Make RSGroupInfo immutable

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Apekshit Sharma
• Created: 12/Dec/17 23:40
• Updated: 02/Jan/18 18:29

Description

HBASE-19483 added CP hooks to expose RSGroupInfo.
First, we should at least change [hbase-client] RSGroupInfo to immutable + builder pattern like we have done for so many other things.
What say Apache9

Then, few questions need figuring out:

• Should hooks be allowed to change RSGroupInfo.
  Probably not? Then making it immutable would be necessary and sufficient
• Can we remove {{if(((MasterEnvironment)getEnvironment()).supportGroupCPs) }} in so many places since CP in 2.0 are already broken left and right (and we'll have to solve legacy issue more holistically) What say anoop.hbase?

Sub-Tasks

• Get rid of MasterEnvironment#supportGroupCPs: Resolved