- 
    Type:Task 
- 
    Resolution: Fixed
- 
    Priority:Major - P3 
- 
    Affects Version/s: None
- 
    Component/s: Aggregation Framework, Diagnostics
- 
        Fully Compatible
- 
        Query 2020-02-10, Query 2020-02-24
- 
        None
- 
        None
- 
        None
- 
        None
- 
        None
- 
        None
- 
        None
It looks like we'll need to remember to do some accounting for this. You can see how $lookup does it here.
- depends on
- 
                    SERVER-45526 Support union with sharded collections -         
- Closed
 
-         
- is depended on by
- 
                    SERVER-45712 Remove flag guard for $unionWith -         
- Closed
 
-