[HBASE-11220] Add listeners to ServerManager and AssignmentManager

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.99.0
• Fix Version/s: 0.99.0, 0.98.3
• Component/s: master
• Assignee: Matteo Bertozzi
• Reporter: Matteo Bertozzi
• Created: 21/May/14 10:09
• Updated: 21/Feb/15 23:31
• Resolved: 28/May/14 09:25

Description

Add support for listeners to ServerManager and AssignmentManager.
This will allows to get notified about servers added/removed or regions added/removed/moved.

I'm planning to use this in the MasterProcedureManager. Since we are starting using the Procedures for distributed operations, we must add support for RS joining or Regions moving. At the moment the operation on the "moving" set of RSs is "lost".

Issue Links

• is depended upon by: HBASE-11221 Make the MasterProcedure aware of RS and Regions changes