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Type: Bug
Resolution: Unresolved
Priority: Major - P3
Fix Version/s: None
Affects Version/s: None
Component/s: None
Labels:
- car-investigation

Assigned Teams:

Catalog and Routing
Operating System:
ALL
Sprint:
CAR Team 2024-08-05, CAR Team 2024-08-19, CAR Team 2024-09-02, CAR Team 2024-09-16, CAR Team 2024-09-30, CAR Team 2024-10-14, CAR Team 2024-10-28, CAR Team 2024-11-11, CAR Team 2024-11-25

Closing a storage engine snapshot via abandonSnapshot() and WriteUnitOfWork::commit() invalidates the CollectionCatalog snapshot held by callers. There are no preventative measures to ensure that callers do not continue using a potentially invalid catalog snapshot, and this is dangerous.

This causes memory errors and segfaults like this one: ~~SERVER-81331~~.

This is also likely a problem just for Lock-free-reads operations

is depended on by

SERVER-95260 Investigate generational lock information

Blocked

related to

SERVER-93509 GlobalLock can potentially release the snapshot involuntarily

Closed

SERVER-95197 Investigate if it's possible to use consistent collections during compact

Backlog

SERVER-95195 Avoid instantiating CollectionPtr using unsafe constructor in index builds coordinator

Backlog

SERVER-95196 Avoid instantiating CollectionPtr using unsafe constructor in MultiIndexBlock

Backlog

SERVER-95260 Investigate generational lock information

Blocked

SERVER-95194 Change checkAndHashCollection function to not use the unsafe CollectionPtr constructor

Closed

SERVER-95308 Investigate if it's worth having a debug only primitive for reference counted pointers

Closed

SERVER-94787 Avoid abandoning the snapshot explicitly in CollectionScan

Needs Scheduling

split to

SERVER-94616 Add Absl::InlinedVector GDB pretty printer

Open

(4 related to, 1 split to)

Assignee:: Josef Ahmad

Reporter:: Louis Williams

Participants:: Josef Ahmad, Louis Williams

Votes:: 0 Vote for this issue

Watchers:: 17 Start watching this issue

Created:: May 29 2024 09:03:30 PM UTC

Updated:: Nov 08 2024 04:06:47 PM UTC

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