fix: prevent first-owner write loss in in-memory stores - #1194
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mykytanetipa merged 2 commits intoAug 24, 2026
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Signed-off-by: Anas Khan <83116240+anxkhn@users.noreply.github.com>
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🧪 Code Coverage (vs
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| Base | PR | Delta | |
|---|---|---|---|
| src/a2a/server/tasks/inmemory_task_store.py | 97.14% | 97.06% | 🔴 -0.08% |
| Total | 93.00% | 92.99% | 🔴 -0.01% |
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Summary
_InMemoryTaskStoreImpl.saveandInMemoryPushNotificationConfigStore.set_infocreated owner buckets before acquiring their existingRLock. Two threads could both observe a missing owner, create separate buckets, and overwrite the bucket containing the first completed write.This moves owner-bucket creation inside the lock with
setdefaultin both stores. Threaded regression tests cover concurrent first writes and confirm that both records remain available through the public retrieval methods.Testing
uv run pytest tests/server/tasks/test_inmemory_task_store.py tests/server/tasks/test_inmemory_push_notifications.py -qResult: 40 passed.