[SERVER-81275] Implement FCV Downgrade Behaviors Created: 20/Sep/23  Updated: 01/Feb/24

Status: Open
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Major - P3
Reporter: Ryan Scott Assignee: Brett Nawrocki
Resolution: Unresolved Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Assigned Teams:
Cluster Scalability
Participants:

 Description   

Ensure that setFeatureCompatibilityVersion waits for any ongoing MultiUpdateCoordinators to complete before downgrading to an FCV where pauseMigrationsDuringMultiUpdatesAvailable is false. Similarly, once downgrading beings, pauseMigrationsDuringMultiUpdates cluster parameter should be disabled, and new multi updates should not be coordinated.


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