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Type: Improvement
Resolution: Fixed
Priority: Major - P3
Fix Version/s: WT12.0.0, 8.3.0-rc0
Affects Version/s: None
Component/s: Test Compatibility
Labels:
None

Assigned Teams:

Storage Engines, Storage Engines - Foundations
Sprint:
SE Foundations - 2025-08-29, SE Foundations - 2025-09-12
Story Points:
5

The WiredTiger compatibility tests currently run verify using one version of binary against data files generated by another version of binary. The default scenario is clean shutdown and the data files are expected to be written completely and intact. In a real world scenario databases could run into an unclean shutdown and we should add coverage for this testing gap.

The scenario to be covered:

WT version X starts up, runs workloads and generates data files
WT runs into an unclean shutdown during the workload
Verify WT version Y can start up with the data files generated by step 1
Run verify

Note: Y could be X-1 or X+1 to cover both downgrade and upgrade cases.

is related to

WT-15086 Eviction thread panic during connection close with disagg enabled

Closed

WT-15204 test_cc02.py fails with AssertionError: 1 != 0 (obsolete_on_disk mismatch)

Closed

WT-15205 test_cc09.py fails with AssertionError: Checkpoint cleanup did not read anything

Closed

WT-15239 Set durable timestamp during recovery in disagg

Closed

WT-15311 Fix for disagg: "value time window has a start time before its parent's oldest start time"

Closed

WT-15210 Change eviction to scrub eviction when the cache usage is less than eviction target

Open

WT-15315 Add 8.2 into the compatibility tests

Closed

WT-15353 Skip test_cc05.py in disagg as named checkpoints are not supported

Closed

WT-15354 Re-enable several checkpoint cleanup Python tests for disagg

Closed

WT-15359 Simplify the obsolete check logic

Closed

WT-15351 Fix memory leak in __wt_disagg_advance_checkpoint

Closed

related to

WT-14690 Review test coverage of crash testing and plan a project to improve it

Closed

WT-15282 Rewrite compatibility test script in a sane language

Open

(6 is related to, 2 related to)

Assignee:: Will Korteland
Reporter:: Luke Chen
Votes:: 0 Vote for this issue
Watchers:: 11 Start watching this issue

Due:: 08/Sep/25
Created:: Jun 22 2025 11:14:03 PM UTC
Updated:: Sep 09 2025 04:57:01 AM UTC
Resolved:: Sep 04 2025 05:58:32 AM UTC

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