[SERVER-38262] Avoid comparing elements between different tree versions in BiggieSE Created: 27/Nov/18  Updated: 29/Oct/23  Resolved: 29/Nov/18

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

Type: Bug Priority: Major - P3
Reporter: Gregory Wlodarek Assignee: Gregory Wlodarek
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Backwards Compatibility: Fully Compatible
Operating System: ALL
Sprint: Storage NYC 2018-12-03
Participants:

 Description   

If you had the following scenario, you would run into equality problems:

  • Open 2 cursors on element "a"
  • Update element "a", making a copy of the tree
  • Check the equality of the two cursors

One cursor would revalidate itself in the equality operator while the other would remain stale, causing incorrect results.



 Comments   
Comment by Githook User [ 29/Nov/18 ]

Author:

{'name': 'Gregory Wlodarek', 'email': 'gregory.wlodarek@mongodb.com', 'username': 'GWlodarek'}

Message: SERVER-38262 Avoid comparing elements between different tree versions in BiggieSE
Branch: master
https://github.com/mongodb/mongo/commit/a20abe09f605a8d6d57611a241f1d38952933748

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