[SERVER-1795] $or don't check already returned values in matcher for nonoverlapping index ranges Created: 14/Sep/10  Updated: 05/May/14  Resolved: 25/Mar/14

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

Type: Bug Priority: Major - P3
Reporter: Aaron Staple Assignee: Unassigned
Resolution: Done Votes: 1
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Operating System: ALL
Participants:

 Description   

With $or matching, there is a step where we check that a document would not have been returned while processing previous or clauses. If an earlier or clause was handled using a disjoint range of the same index as the current clause, we can avoid performing this check.



 Comments   
Comment by Aaron Staple [ 14/Sep/10 ]

Will have to watch out for multikey case, though.

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