[SERVER-68873] serverStatus() command sent to mongos has incomplete query metrics Created: 16/Aug/22  Updated: 25/Jul/23  Resolved: 25/Jul/23

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

Type: Bug Priority: Major - P3
Reporter: Ben Shteinfeld Assignee: Backlog - Query Execution
Resolution: Won't Do Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Assigned Teams:
Query Execution
Operating System: ALL
Sprint: QE 2022-10-17
Participants:

 Description   

serverStatus().metrics.query maintains counters for how many queries used which query framework (classic, SBE, or CQF). When a serverStatus command is issued to a mongos, these counters are always 0.

This is because these counters are incremented in the getExecutor() codepath which is not run on mongos, but rather on each individual shard/mongod. Thus when mongos receives a serverStatus command and consults these counters locally, they are always 0 since they were never incremented.



 Comments   
Comment by Ana Meza [ 25/Jul/23 ]

During Quick Wins Triage the team decided to close this ticket as Won't Do

Comment by Brenda Rodriguez [ 06/Sep/22 ]

ben.shteinfeld@mongodb.com any updates on this? Thanks!

Comment by Ana Meza [ 30/Aug/22 ]

ben.shteinfeld@mongodb.com  do you know if server status returns 0 vs missing

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