Architectural logic: Glue Jobs = serverless Spark; Triggers = orchestration (schedule, event, on-demand). Flow: Define job (script, DPU, timeout) → add Trigger (cron, e.g., 0 6 * * ? *) → chain jobs if needed. Job bookmarks enable incremental processing. Scalability: DPU auto-scales; Triggers can fan-out. Cost: DPU-hours; over-provisioning wastes money....
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