[SERVER-41274] Copy maxFeatureCompatibilityVersion when copying the ExpressionContext Created: 22/May/19  Updated: 06/Dec/22  Resolved: 03/Jun/19

Status: Closed
Project: Core Server
Component/s: Aggregation Framework, Upgrade/Downgrade
Affects Version/s: 4.0.0, 4.0.9
Fix Version/s: None

Type: Task Priority: Major - P3
Reporter: Charlie Swanson Assignee: Backlog - Query Team (Inactive)
Resolution: Won't Fix Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Assigned Teams:
Query
Participants:

 Description   

While implementing SERVER-41257 we noticed that this wasn't happening. The perceivable effect (not tested) is that you can sneak a 4.0-only expression into a view definition even while the feature compatibility version is 3.6.



 Comments   
Comment by Craig Homa [ 03/Jun/19 ]

We believe that the possible impact is that an elaborate view definition can be created in 4.0 before fcv upgrade, despite being incompatible with a downgrade to 3.6.

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