[SERVER-67495] Histogram CE for SARGable elemMatch FilterNode Created: 24/Jun/22  Updated: 29/Oct/23  Resolved: 21/Sep/22

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: 6.2.0-rc0

Type: Task Priority: Major - P3
Reporter: Timour Katchaounov Assignee: Alya Berciu
Resolution: Fixed Votes: 0
Labels: M1
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Depends
depends on SERVER-69023 [CQF] Convert PathArr to Interval Closed
is depended on by SERVER-68444 Extend Heuristic CE for Sargable node... Closed
Backwards Compatibility: Fully Compatible
Sprint: QO 2022-07-11, QO 2022-07-25, QO 2022-08-08, QO 2022-08-22, QO 2022-09-19, QO 2022-10-03
Participants:

 Description   

Implement histogram-based CE for SARGable FilterNodes that represent an elemMatch.



 Comments   
Comment by Githook User [ 21/Sep/22 ]

Author:

{'name': 'Alya Berciu', 'email': 'alya.berciu@mongodb.com', 'username': 'alyacb'}

Message: SERVER-67495 Implement histogram CE for sargable $elemMatch
Branch: master
https://github.com/mongodb/mongo/commit/07696d54307c7f06b7bdf98032600c88afe8c551

Comment by Alya Berciu [ 22/Aug/22 ]

After discussion with timour.katchaounov@mongodb.com and svilen.mihaylov@mongodb.com, putting this work on hold pending a decision on possibly tracking $elemMatch semantics at the level of a SargableNode requirementsMap and updating the way CE is being unit-tested (see SERVER-68980).

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