ATLAS-5362: Atlas Modular Runtime Architecture — Service Decomposition, Graph-Native Coordination, Active-Active HA, and RunMode-Driven Execution - #711
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The claim mechanism was covered by GraphClaimTest with a mocked graph, which can only show that a refusal is interpreted correctly once the store issues one, and by sequential tests that claim as one node and then try as another. Neither uses the store, so neither shows that the claim key is really unique or that dropping a claim leaves the name usable. GraphClaimConcurrencyTest exercises the primitives against the store: a claim already held is refused and the refusal reaches the caller as a lost claim, a released claim can be taken again rather than stranding its uniqueness entry, and repeated handovers leave no claim vertices behind. ClusterClaimCoordinationTest covers the relationships between the deferred startup activities, which the per-activity tests leave untested. Two activities sharing a claim name would serialise work meant to run in parallel with every existing test still passing; index setup and recovery sharing one is deliberate and would be easy to "fix" into a bug. Who wins when nodes claim at the same instant is not covered. Unit tests run on BerkeleyJE, which reports transaction isolation to JanusGraph, so the uniqueness constraint is only checked against committed data and a race there admits several winners whatever the code does. The production backends do arbitrate, and verifying that needs one of them. Co-authored-by: Cursor <cursoragent@cursor.com>
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What changes were proposed in this pull request?
ATLAS-5362: Merge latest master updates into the active-active workstream and align active-active runtime behavior, patch execution safety, and docker/dev setup.
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