[SERVER-37037] Skip oplog construction in OpObserver on secondaries Created: 06/Sep/18  Updated: 06/Dec/22

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

Type: Improvement Priority: Major - P3
Reporter: Siyuan Zhou Assignee: Backlog - Replication Team
Resolution: Unresolved Votes: 0
Labels: former-quick-wins
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Assigned Teams:
Replication
Participants:

 Description   

We don't need to generate and write oplog entries in OpObserver on secondaries since the secondaries already copied them form the sync source. The check is at a low level right before writing the oplog entry to the disk. We can skip constructing oplog entries earlier for better performance.


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