[SERVER-85371] [4.4] Enable wiredTigerPrefixSearchForUniqueIndexes by default Created: 18/Jan/24  Updated: 25/Jan/24  Resolved: 25/Jan/24

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

Type: Improvement Priority: Major - P3
Reporter: Louis Williams Assignee: Backlog - Storage Execution Team
Resolution: Won't Do Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
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Related
related to SERVER-61185 Use prefix_search for unique index lo... Closed
Assigned Teams:
Storage Execution
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 Description   

In SERVER-61185, we backported a default-off performance improvement for unique index insertion. We disabled it by default out of an abundance of caution because a previous iteration required us to issue a CA.

As this is enabled by default in 5.0, we should have some confidence that this behavior works correctly, and we can enable it by default in 4.4, as the consequences are pretty severe perf degradation.


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