[SERVER-60177] Handle empty collection and turn off all accumulators Created: 23/Sep/21  Updated: 29/Oct/23  Resolved: 24/Sep/21

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

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

Issue Links:
Depends
Duplicate
is duplicated by SERVER-60192 Turn off all accumulators for group p... Closed
Backwards Compatibility: Fully Compatible
Operating System: ALL
Sprint: QE 2021-10-04
Participants:
Linked BF Score: 151

 Description   

db.runCommand({
aggregate: "C",
pipeline: [{$unionWith: "nonExistentCollectionAlpha"}], cursor: {}})

Causes a nullptr dereference in PipelineD.



 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 [ 23/Sep/21 ]

Author:

{'name': 'Eric Cox', 'email': 'eric.cox@mongodb.com', 'username': 'ericox'}

Message: SERVER-60177 Handle empty collection in unionWith when pushing down
Branch: master
https://github.com/mongodb/mongo/commit/1482ec7b3af3440a06176939f8fc835ba6394fbc

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