Dayu v1.4 Released

Dayu system Version 1.4 is released!

Breaking Changes

Replace application JointMultiEdgeService generation and edge-side Kubernetes discovery with immutable Sedna RuntimeService resources, Scheduler-owned exact RuntimeDirectory routes, and revision task leases. Runtime workers no longer ship the Kubernetes Python client or accept legacy discovery/cache configuration.

Features

• Add transactional scheduler-first installation, RuntimeDirectory proposal/CAS publication, Redis-backed restart recovery, lease-aware drain, and exact-UID runtime retirement (backend/scheduler).
• Restrict Kubernetes access to the singleton backend with namespace-local lifecycle RBAC and a per-namespace cluster observer binding (backend).
• Unify all deployment policies on the validated logical service -> node list contract; add explicit cloud-only, full, and full-edge initial/redeployment policies; and let fixed policies resolve @cloud or apply include_cloud=false|true without a fixed cloud hostname (scheduler).
• Change the Generator hook lifecycle to filter an ingestion round, reserve its root task identity, schedule when due, and only then materialize source data (generator/scheduler).
• Add task-aware scheduling contracts with framework-reserved TaskIdentity, identity-attributed schedule decisions, canonical plan digests, idempotent Redis-backed pending-to-active task admission records, and a common Scheduler snapshot of resources, reservations, active tasks, and known task barriers (generator/controller/scheduler).
• Replace queue length with an atomic structured queue-state contract covering ordered waiting identities, running identity, and processing/handoff phase (processor/monitor/scheduler).
• Reorganize multi-file hook implementations into algorithm-owned packages with explicit hook.py entry points and names matching their sibling single-file Hook entries.

Bug Fix

• Fix possible failure in install/uninstall with one crash-recoverable ConfigMap CAS session and exact RuntimeService ownership identities (backend).
• Prevent source-selection scope from collapsing to the processor node_set, and reject invalid fixed source configuration instead of silently changing the selected source (backend/scheduler).
• Eliminate Kubernetes service-DNS search-path stalls by preserving stable RuntimeDirectory names while using absolute *.svc.cluster.local. hosts only at HTTP, Redis, iperf, and support-datasource connection boundaries.
• Remove the legacy per-source query startup delay and make result collection generation-scoped, immediately cancellable, and bounded by an explicit Distributor request timeout and batch size (backend/distributor).
• Make install lifecycle-cancellable: stop signals an in-flight RuntimeService activation/planning transaction before serialized cleanup, preserves its crash-recoverable ownership session, and removes pre-publication resources without waiting for an unready Scheduler or the full activation timeout (backend).
• Keep uninstall ownership until Foreground RuntimeService deletion and the complete Kubernetes dependent-resource barrier are empty; prolonged no-progress cleanup now remains retryable and install-fenced while exposing durable diagnostics to every frontend window (backend/frontend).
• Prevent Scheduler supervisor heartbeat timeouts and cascading Generator exits by running one direct Uvicorn process, dispatching blocking Redis endpoints through FastAPI's thread pool, and reducing each task to Generator acquire plus Distributor final-renew/release (generator/scheduler).
• Prevent silent task loss with root-lease-scoped atomic artifacts, exact per-hop ownership ACKs, Generator/Processor backpressure, retry-safe parallel joins, and idempotent durable Distributor acceptance (generator/processor/ distributor).
• Preserve Scheduler management rejection details through Backend RuntimeSession state and frontend presentation, and emit bounded Scheduler 4xx diagnostics without logging complete request payloads.
• Prevent schedule-plan corruption by isolating after-schedule hook mutations, and fix before-submit hooks to operate on the task passed by the Generator instead of an undefined Generator field (scheduler).
• Align built-in scheduling, deployment, redeployment, frame-processing, and compression hooks with full-DAG policy materialization and revision-consistent LIVE RuntimeDirectory state; preserve pipeline partition semantics while rejecting unsupported DAG shapes and inactive execution targets (generator/scheduler).

Minor Update

• Add more services: traffic-detection, road-context-segmentation, traffic-signal-recognition, vehicle-tracking, vehicle-attribute-recognition, vehicle-trajectory-prediction, pedestrian-pose-estimation, pedestrian-intent-recognition, risk-graph-generation (processor).
• Change input/output format of processors from value to list (processor).
• Add import/export of dag in DAG Orchestrain frontend page (frontend).
• Update dockerfile building to support concise modification of ultra parameters.
• Unify input/output interface format of processors (processor).
• Add Gantt visualization to display task result (frontend/backend).

For more details, please refer to dayu-v1.4.