The Cross-DAG DeadlockPipeline · hard · ~15 minSince last week's refactor, revenue_summary (owned by analytics) and customer_metrics (owned by growth) BOTH miss their 07:00 SLA every single day — each timing out waiting for the other. Analytics added a sensor on growth's customer_metrics.enriched_customers; unbeknownst to them, growth's same refactor added a sensor on analytics' revenue_summary.daily_revenue. Neither team can see the other's DAG. Every morning, two sensors stare at each other until timeout.Break the cycle today, then fix the system that allowed an invisible one.Evidence

Evidence

Config

Checkpoints

Why did this cycle survive six days undetected?

The immediate break — using the evidence?

The systemic fix so invisible cycles can't form — and the narration. Interview-style.