[SERVER-58226] Create Feature flag for PM-2371 Created: 02/Jul/21  Updated: 29/Oct/23  Resolved: 27/Aug/21

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: 5.1.0-rc0

Type: Task Priority: Major - P3
Reporter: Ana Meza Assignee: Joshua Lapacik (Inactive)
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
is duplicated by SERVER-58225 Enable Feature flag for PM-2371 Closed
Problem/Incident
Backwards Compatibility: Fully Compatible
Sprint: QO 2021-08-23
Participants:
Linked BF Score: 50

 Description   

Create the feature flag for this project.



 Comments   
Comment by Vivian Ge (Inactive) [ 06/Oct/21 ]

Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it’s been triggered. For more active release information, please keep an eye on #server-release. Thank you!

Comment by Githook User [ 18/Aug/21 ]

Author:

{'name': '80741223+jlap199@users.noreply.github.com', 'email': '80741223+jlap199@users.noreply.github.com', 'username': 'jlap199'}

Message: SERVER-58226 Add feature flag to enable use of the SBE plan cache
Branch: master
https://github.com/mongodb/mongo/commit/61954e1ba30f6dcd51d8ee92d2c202c7a7b4ed20

Comment by David Storch [ 12/Aug/21 ]

Under this ticket, we should introduce featureFlagSbePlanCache. This feature flag will be a bit special because it should only be enabled when internalQueryEnableSlotBasedExecutionEngine is also enabled. At the moment, this means that the SBE plan cache should always be off except for in the SBE build variants. I believe that in order to implement this, featureFlagSbePlanCache should be added to fully_disabled_feature_flags.yml. This will ensure that the SBE plan cache is turned off in the "all feature flag" build variants (otherwise the feature flag would be automatically enabled in these variants).

We also might want to temporarily leave the flag off, even in the SBE build variants, until the SBE plan cache is sufficiently mature? Not sure.

CC anton.korshunov

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