OpenRCA 2.0 Lite v2 — fault kind rebalanced 500 case curated RCA evaluation set, rebalanced 2026 05 03 from the same 1 464 case pool as openrca2 lite v1 but with diversity caps tuned for fault kind richness rather than raw graph size. What changed vs v1 v1 had ~34 % pod killer cases (PodFailure / PodKill / ContainerKill, single leg or as a leg of a hybrid). Under the v2 evaluation contract — which scores network faults on direction.src/dst and jvm / http on optional method — pod killer cases are essentially trivial: the killed service goes silent, all calls to it 5xx, no direction / method is required for full credit. v2 caps that family aggressively and reallocates the budget to subtype rich families. v1 v2 Δ : : : pod killer total share 34.4 % 22.0 % −12.4 pp single leg Pod 92 50 −42 hybrid kill 80 60 −20 HTTP (8 subtypes) 54 77 +23 Network (6 subtypes) 66 72 +6 JVM 26 35 +9 hybrid clean (real multi root difficulty) 140 163 +23 trivial cases ( longest path == 2 ) 141 (28 %) 116 (23 %) −25 mean longest path 3.46 3.64 +0.18 Composition 500 cases · hybrid : leaf = 223 : 277 (44.6% : 55.4%) · pod killer share = 110/500 = 22.0% Chaos family family count % : : hybrid clean 163 32.6 % H…
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