[SERVER-83314] Fail collMod command converting index uniqueness when using wiredtiger in-memory engine Created: 15/Nov/23  Updated: 05/Dec/23

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

Type: Task Priority: Major - P3
Reporter: Yuhong Zhang Assignee: Backlog - Storage Execution Team
Resolution: Unresolved Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Depends
Related
related to SERVER-61182 [inMemory] collmod_convert_to_unique.... Backlog
Assigned Teams:
Storage Execution
Participants:

 Description   

When converting an index to unique/non-unique, we need to call alter on wiredtiger to change the index table's metadata. This is a no-op in the in-memory engine right now so the collMod command will not work correctly.

We should fail the command early for in-memory storage engine.

As part of the ticket, we should also investigate the implication in replication when there are a mix of nodes running on-disk and in-memory storage engine.


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