[SERVER-65131] Disable opportunistic read targeting (except for hedged reads) Created: 31/Mar/22  Updated: 29/Oct/23  Resolved: 09/May/22

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: 4.4.15, 6.0.0-rc8, 5.0.10, 6.1.0-rc0

Type: Task Priority: Major - P3
Reporter: Vojislav Stojkovic Assignee: Vojislav Stojkovic
Resolution: Fixed Votes: 0
Labels: 6.1-targeted
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Backports
Depends
is depended on by SERVER-57230 mongos doesn't distribute secondary r... Closed
Documented
is documented by DOCS-15330 Investigate changes in SERVER-65131: ... Closed
Duplicate
duplicates SERVER-57230 mongos doesn't distribute secondary r... Closed
Problem/Incident
Related
is related to DOCS-15378 [BACKPORT] [v6.0] Disable opportunist... Backlog
Backwards Compatibility: Fully Compatible
Backport Requested:
v6.0, v5.3, v5.0, v4.4, v4.2
Sprint: Service Arch 2022-05-02, Service Arch 2022-05-16
Participants:
Case:
Linked BF Score: 135

 Description   

As a result of investigation for SERVER-57230, we have decided to disable opportunistic read targeting (except for hedged reads), similar to what was done in SERVER-54278.

Acceptance criteria: running ConnectionsBuildup workload shows an even distribution of work over the secondary nodes.



 Comments   
Comment by Githook User [ 31/May/22 ]

Author:

{'name': 'Vojislav Stojkovic', 'email': 'vojislav.stojkovic@mongodb.com', 'username': 'vstojkovic-mongodb'}

Message: SERVER-65131 Disable opportunistic read targeting

(cherry picked from commit e6547d5561be2e0fe51f5f7a317a094732f77c2c)
Branch: v6.0
https://github.com/mongodb/mongo/commit/a8fd3bd540ae7c8b27689c34a3859d7aaacd4a1e

Comment by Githook User [ 25/May/22 ]

Author:

{'name': 'Vojislav Stojkovic', 'email': 'vojislav.stojkovic@mongodb.com', 'username': 'vstojkovic-mongodb'}

Message: SERVER-65131 Disable opportunistic read targeting
Branch: v4.4
https://github.com/mongodb/mongo/commit/e4c469e6d6696dc603aff444500fbdbb2ea480be

Comment by Githook User [ 25/May/22 ]

Author:

{'name': 'Vojislav Stojkovic', 'email': 'vojislav.stojkovic@mongodb.com', 'username': 'vstojkovic-mongodb'}

Message: SERVER-65131 Disable opportunistic read targeting
Branch: v5.0
https://github.com/mongodb/mongo/commit/dd8afb86b4c73bc617f79c46693c3c63d5addfed

Comment by Githook User [ 05/May/22 ]

Author:

{'name': 'Vojislav Stojkovic', 'email': 'vojislav.stojkovic@mongodb.com', 'username': 'vstojkovic-mongodb'}

Message: SERVER-65131 Disable opportunistic read targeting
Branch: master
https://github.com/mongodb/mongo/commit/e6547d5561be2e0fe51f5f7a317a094732f77c2c

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