[SERVER-56618] Change SBE to count keys inspected which result in EOF as 'examined' Created: 04/May/21  Updated: 06/Dec/22

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

Type: Task Priority: Major - P3
Reporter: Ian Boros Assignee: Backlog - Query Execution
Resolution: Unresolved Votes: 0
Labels: sbe-post-v1, sbe-rollout
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Related
related to SERVER-55335 Productivity formula in SBE plan rank... Closed
Assigned Teams:
Query Execution
Sprint: Query Execution 2021-05-17, Query Execution 2021-06-14, Query Execution 2021-06-28, Query Execution 2021-07-12, Query Execution 2021-07-26, QE 2021-08-09, QO 2021-10-04
Participants:

 Description   

This is follow-on work from SERVER-55335.



 Comments   
Comment by Ian Boros [ 18/Aug/21 ]

steve.la This is not a query correctness issue, but an issue with the statistics reported in explain output about the number of keys examined by an IX scan. While investigating this we realized that the classic engine actually has a similar problem. In my view this is not an urgent issue, and not should not block us from turning on SBE.

Comment by Ian Boros [ 20/May/21 ]

Bumping one sprint per conversation with Anton and Dave.

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