[SERVER-4583] Would like to have a command for priming index by a sequential read of the index data instead of a B-tree traverse. Created: 29/Dec/11  Updated: 29/Feb/12  Resolved: 29/Dec/11

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

Type: Improvement Priority: Major - P3
Reporter: MediaMath Mongo Assignee: Unassigned
Resolution: Duplicate Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
duplicates SERVER-2023 touch command to pre-heat a collection Closed
Participants:

 Description   

Currently in order to prime an index of a collection, we have to do a special query to force mongo go thru the entire BTree for the index. This trick is extremely inefficient for a large index tree (over 10 millions entries). Would like to have a command (please make it available in C++ driver) to prime collection data – either index or data or both, by simply doing a sequential read of the data extents for the collection.


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