[RATIS-795] Read SateMachine data failure should result in log fail notification

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.4.0
• Fix Version/s: 0.5.0
• Component/s: server
• Assignee: Siddharth Wagle
• Reporter: Siddharth Wagle
• Created: 15/Jan/20 23:13
• Updated: 23/Jan/20 09:02
• Resolved: 23/Jan/20 09:02

Description

Presently an exception thrown during read state machine data causes a RaftLogException to be thrown but we do not notify the state machine.

Downstream in Ozone the state machine is marked unhealthy and there is no way for the follower to recover.