[SERVER-66192] Readers of the count / dataSize derived metadata should implicitly apply any available queued change Deltas before returning the latest value Created: 03/May/22  Updated: 06/Dec/22  Resolved: 01/Sep/22

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

Type: Task Priority: Major - P3
Reporter: Dianna Hohensee (Inactive) Assignee: Backlog - Storage Execution Team
Resolution: Won't Do Votes: 0
Labels: DM-M1
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
is duplicated by SERVER-66214 Apply all available unapplied derived... Closed
Assigned Teams:
Storage Execution
Participants:

 Description   

When a reader wants to know the latest count/dataSize value, we should first apply any unapplied Deltas before returning the latest value to the caller.

Not sure whether it's reasonable to fetch the all_durable timestamp from WT every user read. It might be. Also could consider whether to use other in-memory system timestamps – maybe even the oplogReadTimestamp.


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