[SERVER-46287] Switch background validation to use read-at-time rather than a checkpoint cursor Created: 20/Feb/20  Updated: 29/Oct/23  Resolved: 06/Mar/20

Status: Closed
Project: Core Server
Component/s: Storage
Affects Version/s: None
Fix Version/s: 4.4.0-rc0, 4.7.0

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

Issue Links:
Backports
Depends
is depended on by SERVER-44012 Remove tracking of newly created inde... Closed
is depended on by SERVER-46564 Remove the CheckpointLock class Closed
is depended on by SERVER-46570 Remove the kCheckpoint ReadSource on ... Closed
Related
is related to SERVER-68689 Switch background validation to use c... Closed
Backwards Compatibility: Fully Compatible
Backport Requested:
v4.4
Sprint: Execution Team 2020-03-09
Participants:
Linked BF Score: 26

 Description   

Checkpoint cursors will no longer work due to the way fuzzy checkpoints work. However, with durable history, using a point-in-time read for background validation should have no issues. Therefore, we will switch to using point-in-time reads for background validation prior to the incorporation of the fuzzy checkpoint WT feature.



 Comments   
Comment by Githook User [ 06/Mar/20 ]

Author:

{'name': 'Andrew Chen', 'email': 'andrew.chen@10gen.com'}

Message: SERVER-46287: Switched background validation to use PIT read instead of checkpoint cursor

delete mode 100644 jstests/noPassthrough/background_validation_checkpoint_existence.js
create mode 100644 jstests/noPassthrough/background_validation_repl.js

(cherry picked from commit a2d5d3a4b48783913d7e8d0620c3e5dac8b85068)

delete mode 100644 jstests/noPassthrough/background_validation_checkpoint_existence.js
create mode 100644 jstests/noPassthrough/background_validation_repl.js
Branch: v4.4
https://github.com/mongodb/mongo/commit/830cf4248f4d61a41d8b3ff1a95d1b1479bbb923

Comment by Githook User [ 06/Mar/20 ]

Author:

{'name': 'Andrew Chen', 'email': 'andrew.chen@10gen.com'}

Message: SERVER-46287: Switched background validation to use PIT read instead of checkpoint cursor

delete mode 100644 jstests/noPassthrough/background_validation_checkpoint_existence.js
create mode 100644 jstests/noPassthrough/background_validation_repl.js
Branch: master
https://github.com/mongodb/mongo/commit/a2d5d3a4b48783913d7e8d0620c3e5dac8b85068

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