[SERVER-82155] [CQF] Ensure we generate covered plans by default for fields which may be null Created: 12/Oct/23  Updated: 20/Oct/23

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

Type: Task Priority: Major - P3
Reporter: Hana Pearlman 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
is related to SERVER-64645 Add a query knob to disable covered s... Backlog
Assigned Teams:
Query Optimization
Participants:

 Description   

We should make sure that we are capable of generating covered plans for queries like the following:

query: {a: 1}, index: {a: 1, b: 1}

This should be the behavior by default, to match classic. This likely involves changing the default of internalCascadesOptimizerFastIndexNullHandling to true.


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