[IGNITE-18960] Implement notification for placement driver about replication group inoperability

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0
• Labels: iep-101 ignite-3
• Epic Link: Placement Driver [Part 1]
• Assignee: Vladislav Pyatkov
• Reporter: Denis Chudov
• Created: 04/Mar/23 02:28
• Updated: 04/Sep/24 16:10
• Resolved: 10/May/23 12:31

Description

This is a responsibility of replication group to notify the placement driver about becoming inoperable, for example, about majority loss in case of Raft. The corresponding message should be sent from leaseholder to placement driver so that the placement driver would not prolong the lease for this leaseholder automatically.

As the replica may not know about the actual active actor of placement driver, it should send the message to every node in placement driver group. On the placement driver side, there may be no active actor at the moment. In this case, the replica should wait for next lease prolongation (which means that active actor has appeared) and after that repeat the messages to placement driver group.

The active actor should send LeaseGrantMessage for this leaseholder, which should, in the same way as while initial lease granting process, wait for group operability to send response.

 

Issue Links

• is blocked by: IGNITE-19390 Handling lease deny message in placement driver side
• links to: GitHub Pull Request #2036