[SERVER-66102] Change column_scan stage to read from actual column store Created: 01/May/22  Updated: 29/Oct/23  Resolved: 01/Jun/22

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: 6.1.0-rc0

Type: Task Priority: Major - P3
Reporter: Ian Boros Assignee: Ian Boros
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Backwards Compatibility: Fully Compatible
Participants:

 Description   

The column_scan SBE stage currently reads from a "fake" column store. See here. We must change it to read from the true column store.

As part of this work, we should also make sure the column_scan stage handles yielding correctly. Any data pointed to by a column cursor will be invalid after a yield, so we should make local copies in saveState().



 Comments   
Comment by Githook User [ 11/May/22 ]

Author:

{'name': 'Ian Boros', 'email': 'ian.boros@mongodb.com', 'username': 'borosaurus'}

Message: SERVER-66102 Change column scan stage to read from true column index
Branch: master
https://github.com/mongodb/mongo/commit/83ae5393284912aded0087fd2cdf79edff6f999f

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