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Type: Task
Resolution: Fixed
Priority: Major - P3
Fix Version/s: WT12.0.0, 8.3.0-rc0
Affects Version/s: None
Component/s: Concurrency
Labels:
- Correctness

Assigned Teams:

Storage Engines, Storage Engines - Foundations, Storage Engines - Transactions
Sprint:
SE Transactions - 2025-07-18, SE Transactions - 2025-08-01, SE Transactions - 2025-08-15, SE Transactions - 2025-08-29
Story Points:
5

This ticket includes:
1. Investigate all conn->flags(~30), find those flags that may have race condition problem.
2. Create a new field atomic_flags for connection, move those flags that need to be atomic to this new field.
3. Add atomic operation MACROs for uint32_t since the connection flag is 32 bit and wiredtiger does not support atomic operation on a uint32_t yet.
4. Modify the current flag operations to ATOMIC_32 operations for those atomic_flags.
5. Run performance tests to evaluate the impact of this new approach. It is possible to see performance BFs for the changes made in this ticket. However we shouldn't trade correctness for performance and need to find a better solution if there's still a performance impact.

is related to

WT-14224 Check uses of non-atomic "conn" and "dsrc" stat macros.

Open

WT-14340 Make conn->flags atomic

Closed

WT-15173 Coverity analysis defect 175782: Dereference null return value

Closed

WT-15002 Remove the WT_DELTA_CELL_LEAF structure and change leaf page delta format

In Code Review

WT-15030 Improve TSAN script to work on new code

Closed

WT-15202 Disagg python testing: Update hook_disgg.fail and skip unsupported tests in disagg mode

Closed

WT-15225 Fix newly created table and drop() EBUSY issue

Closed

WT-15228 Create the prepared_id_transaction and prepared_id_transaction_uint api

Closed

WT-15234 Test deleting local files on startup in disagg

Closed

WT-15095 Refine eviction selection of pages with few updates

Closed

related to

WT-14781 Disagg python testing: change "skipped recovery RTS due to disagg" from warning to info message

Closed

WT-12027 ex_backup_block issue with cleanup

Closed

(5 is related to, 2 related to)

Assignee:: Zunyi Liu
Reporter:: Zunyi Liu
Votes:: 0 Vote for this issue
Watchers:: 4 Start watching this issue

Created:: Jul 11 2025 05:48:57 AM UTC
Updated:: Aug 27 2025 06:35:14 PM UTC
Resolved:: Aug 21 2025 03:56:39 AM UTC

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