[SERVER-58596] Implement translation of $group stage in the sbe SlotBasedStageBuilder Created: 15/Jul/21  Updated: 06/Dec/22  Resolved: 03/Aug/21

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

Type: Task Priority: Major - P3
Reporter: Eric Cox (Inactive) Assignee: Backlog - Query Execution
Resolution: Duplicate Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
duplicates SERVER-58516 Support translation of $group in SBE ... Closed
Assigned Teams:
Query Execution
Participants:

 Description   

This work will involve:

  1. Adding a new QuerySolutionNode to represent a $group DocumentSource, called GroupNode
  2. Extending the SlotBasedStageBuilder to support translation of GroupNode to an sbe PlanStage. This would leverage the accumulator builders done in previous work.
  3. Using VirtualScanNode to unittest the translation of a simple QSN tree GroupNode --> VSN. 

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