[SERVER-86309] Untrack unsplittable collections on downgrade Created: 06/Feb/24  Updated: 07/Feb/24

Status: Needs Scheduling
Project: Core Server
Component/s: Sharding
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Major - P3
Reporter: Marcos José Grillo Ramirez Assignee: Backlog - Catalog and Routing
Resolution: Unresolved Votes: 0
Labels: PM-3364-Milestone-4
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Depends
depends on SERVER-86311 Create coordinators to track and untr... Needs Scheduling
Assigned Teams:
Catalog and Routing
Participants:

 Description   

This branch contains work in progress on the setFeatureCompatibility command that tracks unsharded collections on upgrade, and untrack collections on downgrade. The new plan for 8.0 do not require tracking all unsharded collections, considering that now they will be lazily tracked by moveCollection. However, we still need the dowgrade code, and the coordinator that was already developed there.

The purpose of this ticket is to get the work necessary regarding fcv downgrade from the forementioned branch for 8.0.


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