[RATIS-1109] Notify StateMachine on Configuration change

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: StateMachine
• Target Version/s: 2.0.0
• Assignee: Hanisha Koneru
• Reporter: Hanisha Koneru
• Created: 27/Oct/20 23:52
• Updated: 03/Nov/20 14:16
• Resolved: 03/Nov/20 09:11

Description

When Ratis receives a Configuration change request (SetConfiguration), the StateMachine is only notified of index update.

CompletableFuture<Message> applyLogToStateMachine(LogEntryProto next) {
  if (!next.hasStateMachineLogEntry()) {
    stateMachine.notifyIndexUpdate(next.getTerm(), next.getIndex());
  } else if (next.hasStateMachineLogEntry()) {
  ......

This Jira aims to add a method in StateMachine interface to notify StateMachine about configuration change.

Issue Links

• links to: GitHub Pull Request #251