[SERVER-37269] Use read_once cursors to do foreground index build collection scans Created: 21/Sep/18  Updated: 29/Oct/23  Resolved: 08/Nov/18

Status: Closed
Project: Core Server
Component/s: Storage
Affects Version/s: None
Fix Version/s: 4.1.6

Type: Task Priority: Major - P3
Reporter: Eric Milkie Assignee: Louis Williams
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Depends
depends on SERVER-37590 Investigate performance implications ... Closed
Related
related to SERVER-37418 Background index builds should batch ... Closed
Backwards Compatibility: Fully Compatible
Sprint: Storage NYC 2018-11-19
Participants:

 Description   

We could consider using this feature for both the data table scan as well as the scans of the two temporary tables.



 Comments   
Comment by Githook User [ 08/Nov/18 ]

Author:

{'name': 'Louis Williams', 'email': 'louis.williams@mongodb.com', 'username': 'louiswilliams'}

Message: SERVER-37269 Use read_once cursors to do foreground index build collection scans
Branch: master
https://github.com/mongodb/mongo/commit/a961bee3dac47375e8a6e1dff615a41401442448

Comment by Eric Milkie [ 12/Oct/18 ]

Further work to determine the behavior of read-once cursors will be done in SERVER-37590.

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