[SERVER-74869] [CQF] Add ability to select an alternative execution plan from a JS test Created: 14/Mar/23  Updated: 20/Apr/23

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

Type: Improvement Priority: Major - P3
Reporter: Svilen Mihaylov (Inactive) Assignee: Backlog - Query Optimization
Resolution: Unresolved Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Related
related to SERVER-72049 [CQF] Test all plans for a single MQL... Backlog
related to SERVER-73552 [CQF] Add ability to enumerate all plans Closed
Assigned Teams:
Query Optimization
Participants:

 Description   

We want to be able to specify in some way (say a plan index) the plan alternative we want to execute. Under normal circumstances we want naturally the best plan, but with for debugging and correctness testing we want to execute say plan alternative #10 which would be amongst the rejected plans.

One way to achieve this would be to introduce a test-only query knob with some integer value specifying the index of the plan alternative.


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