[SERVER-66602] Extend the DocumentSourceLookup class for foreign-side external data source Created: 19/May/22  Updated: 21/Jul/22  Resolved: 21/Jul/22

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

Type: Task Priority: Major - P3
Reporter: Yoon Soo Kim Assignee: Yoon Soo Kim
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Sprint: QE 2022-07-11, QE 2022-07-25
Participants:

 Description   

Sub items:

  • Extend the DocumentSourceLookup class so that it can replace “from” collection by the auto-generated placeholder collection name when the “from” collection is “system.external_data_source”
  • Extend the SBE pushdown logic so that it pushes $lookup stage down to the SBE when its “from” collection is an external data source
  • Verify that serial $lookup works out of the box

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