[SERVER-47784] Remove support of $ _internalReadAtClusterTime for dbHash Created: 27/Apr/20  Updated: 06/Dec/22

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

Type: Task Priority: Major - P3
Reporter: Lingzhi Deng Assignee: Backlog - Replication 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-47783 Use atClusterTime instead of $_intern... Closed
Assigned Teams:
Replication
Sprint: Repl 2020-05-18, Repl 2020-06-01, Repl 2020-06-15
Participants:

 Description   

Remove usages of $_internalReadAtClusterTime in dbHash.



 Comments   
Comment by Ali Mir [ 18/Jun/20 ]

Snapshot reads are not supported on eMRC=false variants. As a result, we use the $_internalReadAtClusterTime logic in the dbHash background hook when eMRC=false instead of snapshot reads here. We cannot fully remove the $_internalReadAtClusterTime field from dbHash until the eMRC=false variant is discontinued. As a result, lingzhi.deng and I have discussed and we will move this ticket into the Remove Support for enableMajorityReadConcern:false epic.

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