[SERVER-54193] Investigate if getMore failpoints no longer need to drop and reacquire db_raii helper Created: 01/Feb/21  Updated: 06/Dec/22

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

Type: Improvement Priority: Major - P3
Reporter: David Storch Assignee: Backlog - Query Execution
Resolution: Unresolved Votes: 0
Labels: neweng
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Assigned Teams:
Query Execution
Participants:

 Description   

The implementation of the getMore command has a few fail points which tests can enabled in order to cause the getMore to hang at specific points in its execution, among them:

Both fail points currently have code that will cause them to repeatedly drop and reacquire their AutoGetCollectionForReadCommandMaybeLockFree. This code was initially introduced under SERVER-21997 to solve a deadlock in our tests. However, this deadlock required the MMAPv1 storage engine, which has since been deleted from the code base. We should investigate if we can now safely remove the code for dropping/reacquiring the db_raii object while hanging on these getMore failpoints.


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