[SERVER-83918] Optimize BSONColumn DocDiff generation Created: 05/Dec/23  Updated: 31/Jan/24

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

Type: Improvement Priority: Major - P3
Reporter: Gregory Wlodarek 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
depends on SERVER-79416 Generate and apply the BSONColumn Doc... Open
Assigned Teams:
Storage Execution
Participants:

 Description   

In the initial implementation we scan the before and after buckets for each data field to find the first differing byte in the BSONColumns. After the work is done to maintain the compression state in buckets, we can use BSONColumnBuilder::intermediate() with the anchor option to remove this scan for BSONColumn DocDiff generation.


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