[SERVER-64038] Allow MODE_IX multi-collection locking in the AutoGet* helpers because multi-document transaction reads use MODE_IX Created: 28/Feb/22  Updated: 29/Oct/23  Resolved: 07/Mar/22

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: 6.0.0-rc0

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

Issue Links:
Depends
is depended on by SERVER-64177 Verify that $lookup pushdown into SBE... Closed
Related
related to SERVER-62798 Use AutoGetCollectionMulti in MultiCo... Closed
Backwards Compatibility: Fully Compatible
Sprint: Execution Team 2022-03-07, Execution Team 2022-03-21
Participants:

 Description   

SERVER-62798 currently must exclude multi-doc transactions because of this invariant that multi-collection locking is MODE_IS only.

Remove the multi-doc trans exclusion in run_aggregate.cpp necessitated by SERVER-62798 along with this work.



 Comments   
Comment by Githook User [ 07/Mar/22 ]

Author:

{'name': 'Dianna Hohensee', 'email': 'dianna.hohensee@mongodb.com', 'username': 'DiannaHohensee'}

Message: SERVER-64038 Allow any lock mode for multi-collection locking in AutoGet* helpers; Also enable SBE $lookup to run multi-collection locking for reads inside multi-doc transactions
Branch: master
https://github.com/mongodb/mongo/commit/c72c44ad03a1872871679152424a89a83d1c8816

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