[SERVER-78483] Lookup on collated time-series collection produces incorrect results Created: 27/Jun/23  Updated: 27/Oct/23  Resolved: 28/Jul/23

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

Type: Bug Priority: Major - P3
Reporter: Arun Banala Assignee: Backlog - Query Integration
Resolution: Works as Designed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Assigned Teams:
Query Integration
Operating System: ALL
Participants:

 Description   

A $lookup on a time-series collection that uses collation produces incorrect results. This is potentially because the $lookup part of the pipeline is using control summaries which are generated under the assumption that they are only used for collated queries. It seems like we are incorrectly using the it for non-collated queries.

We should also test for $unionWith and $graphLookup which also allow foreign collections.


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