{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp09_archetype_breadth150_20260804","research_id":"eoa_inverse_innovation_exp09_light_prior_art_20260804","cell_id":"emergent_pattern_detection__computer_science","search_lanes":{"direct_problem_and_intervention":{"queries":["cross-service retry storm distributed tracing retry lineage detection","microservice retry amplification request lineage observability","distributed trace retry attempts lineage retry storm observability product"],"source_ids":["SRC1","SRC3","SRC4"],"no_result_note":null},"synonyms_and_historical_terms":{"queries":["retry amplification cascading failure microservices positive feedback","retry storms metastable failure distributed systems","avalanche failure retries queues microservices"],"source_ids":["SRC1","SRC2","SRC3"],"no_result_note":null},"products_practices_and_standards":{"queries":["AWS retry storm exponential backoff jitter retry limit","OpenTelemetry HTTP retry attempt resend count semantic conventions","RetryGuard interdependent microservices retry policy"],"source_ids":["SRC2","SRC3","SRC4"],"no_result_note":null},"component_combination":{"queries":["distributed trace retry ancestry fanout queue delay anomaly detection","retry generated load distinguish original traffic tracing","cross-service retry lineage matched baseline anomaly detection"],"source_ids":["SRC3","SRC4"],"no_result_note":"No retained source described the complete combination of cross-service retry-descendant reconstruction, contextual matched baselines, uncertainty-labeled hypotheses, human classification, and post-response detector revision."}},"sources":[{"source_id":"SRC1","title":"Metastable Failures in the Wild","publisher":"USENIX Association","url":"https://www.usenix.org/conference/osdi22/presentation/huang-lexiang","source_type":"PRIMARY_RESEARCH","claims_supported":["A study of public incident reports identified 22 metastable failures across 11 organizations.","Metastable failures recur in severe distributed-system outages and involve triggers followed by amplification mechanisms.","The research establishes self-sustaining distributed failure as a visible problem class but does not present the proposed retry-lineage sentinel."]},{"source_id":"SRC2","title":"REL05-BP03 Control and limit retry calls","publisher":"Amazon Web Services","url":"https://docs.aws.amazon.com/wellarchitected/2022-03-31/framework/rel_mitigate_interaction_failure_limit_retries.html","source_type":"OFFICIAL_GUIDANCE","claims_supported":["AWS states that original and retried requests can saturate a network, produce a retry storm, reduce availability, and potentially continue to full system failure.","Synchronized backoff can cluster retry calls, motivating jitter as well as bounded retries and capped exponential backoff.","The guidance emphasizes prevention and containment rather than cross-service lineage-based detection."]},{"source_id":"SRC3","title":"RetryGuard: Preventing Self-Inflicted Retry Storms in Cloud Microservices Applications","publisher":"arXiv","url":"https://arxiv.org/abs/2511.23278","source_type":"PRIMARY_RESEARCH","claims_supported":["Misaligned retry policies across independent microservices can cause retry storms, resource contention, and escalating costs.","RetryGuard is a distributed framework that dynamically manages retries at service level using an analytic model relating retries, rejections, delays, and costs.","Reported Kubernetes and Istio experiments make RetryGuard close intervention-level prior art, although its disclosed objective is automatic productive retry control rather than trace-lineage hypothesis generation and human review."]},{"source_id":"SRC4","title":"Semantic conventions for HTTP spans","publisher":"OpenTelemetry","url":"https://opentelemetry.io/docs/specs/semconv/http/http-spans/","source_type":"OFFICIAL_STANDARD","claims_supported":["OpenTelemetry recommends an HTTP client span for each physical send attempt when instrumentation supports it.","The standardized http.request.resend_count attribute records the ordinal resend attempt, including retries.","The specification supplies retry-observability primitives and warns that indiscriminate request-header capture can leak sensitive information, but does not define a retry-storm detector."]}],"problem_evidence":{"status":"SUPPORTED","finding":"Primary research and AWS guidance directly support the existence of retry-driven positive feedback across distributed or interdependent services, including saturation, delay, resource contention, reduced availability, and self-sustaining failure. OpenTelemetry provides standardized attempt-level trace data from which retry propagation could be investigated. The sources do not establish how often ordinary alarms miss the transition or whether the proposed detector would consistently alert earlier.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"closest_prior_art":[{"name":"RetryGuard","source_ids":["SRC3"],"overlap":"Addresses uncoordinated retries across interdependent microservices and uses a distributed analytic framework relating retries, rejection throughput, delays, and costs to prevent retry storms.","remaining_difference":"It manages retry policies to suppress counterproductive retries; the retained publication does not describe reconstructing retry descendants from distributed traces, comparing joint lineage growth with matched historical recovery, or emitting uncertainty-labeled hypotheses for human classification."},{"name":"Metastable-failure analysis","source_ids":["SRC1"],"overlap":"Models distributed failures that persist through amplification after an initiating trigger and documents their recurrence in real incidents.","remaining_difference":"It characterizes a broad failure class rather than implementing the candidate's live, lineage-specific detection and governed response workflow."},{"name":"AWS retry-storm controls","source_ids":["SRC2"],"overlap":"Targets the same failure mechanism with retry limits, capped exponential backoff, and jitter that breaks synchronized retry clusters.","remaining_difference":"These are configured controls and preventive practices, not an observability-layer detector of coupling among multiple locally compliant retry loops."},{"name":"OpenTelemetry per-attempt HTTP retry spans","source_ids":["SRC4"],"overlap":"Provides standardized retry-attempt spans and resend counts that could serve as the candidate's telemetry substrate.","remaining_difference":"It standardizes instrumentation but does not infer cross-edge retry ancestry, distinguish amplification from healthy recovery using matched baselines, or attach review and response ownership."}],"prior_art_disposition":"ADJACENT_PRIOR_ART","contrastive_claim_remaining":"Given adequate trace sampling and consistent retry markers, reconstructing retry descendants across multiple service edges and testing their joint fan-out, synchronization, and queue-delay growth against traffic-, endpoint-, and deployment-matched healthy recovery windows will identify independently reviewer-confirmed distributed retry amplification earlier or more explicitly than per-service retry counters and generic latency, error, and saturation alerts. Human classification and separate change authority are governance features, not yet-demonstrated detection advantages.","contrastive_claim_falsifier":"The claim is falsified if a fixed replay corpus shows no earlier or more discriminating identification than existing alerts; if independently labeled amplification episodes are missed; if matched healthy recovery produces operationally unacceptable false hypotheses; or if the apparent patterns disappear after correcting for sampling gaps, duplicate spans, batch traffic, deployments, or changes in original demand.","gates":{"adequate_source_search":{"status":"PASS","rationale":"The bounded search covered direct terminology, metastable and avalanche failure terminology, official retry practices, a retry-control research system, trace standards, and component combinations. All four retained sources were opened; they span four publishers and include two primary-research sources, official guidance, and an official specification.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"supported_problem":{"status":"PASS","rationale":"Research and official guidance directly establish retry storms, cross-service policy misalignment, amplification, congestion, and availability consequences. The proposed timing advantage remains unproven but is separable from whether the problem exists.","source_ids":["SRC1","SRC2","SRC3"]},"distinct_testable_claim":{"status":"PASS","rationale":"The remaining claim is narrower than RetryGuard's automatic retry control and the retained instrumentation and prevention practices. It specifies measurable inputs, comparators, independent labels, alert timing, and false-hypothesis outcomes.","source_ids":["SRC2","SRC3","SRC4"]},"bounded_next_test":{"status":"PASS","rationale":"Offline replay on a fixed small corpus of degradation and matched healthy-recovery windows, using existing policy-compliant telemetry and blinded reviewer labels, can compare timing, agreement, artifacts, false hypotheses, and processing cost without changing production behavior.","source_ids":["SRC2","SRC3","SRC4"]},"no_obvious_safety_or_authority_stop":{"status":"PASS","rationale":"A payload-free, shadow-only replay has no evident categorical safety or authority stop if access controls, sampling validation, retention limits, and processing-cost limits are enforced. OpenTelemetry's header-capture warning reinforces excluding sensitive fields. Any production retry, routing, or circuit-breaker change requires separate incident or change authority.","source_ids":["SRC2","SRC4"]}},"screen_survival":true,"world_novelty_boundary":"This four-source public-web screen supports only coarse researchability and an ADJACENT_PRIOR_ART disposition. It cannot establish world novelty, patentability, market size, expert acceptance, realized value, or the absence of closer patents, products, internal systems, or publications. The surviving boundary concerns the specific trace-lineage, matched-baseline, uncertainty-preserving, human-reviewed detection structure and its comparative test—not the novelty of retry-storm control, distributed tracing, or anomaly detection individually."}