Error State Bypasses NoData Handling in Grafana Unified Alerting Rule Evaluation
Context Grafana unified alerting (v9+) distinguishes between NoData state (query returns zero points) and Error state (query execution fails). NoData behavior is configurable per rule: Alerting, KeepLast, or Resolve. Error state, however, always fires an alert unless intercepted by a catch-all rule, creating an asymmetric handling path that operators must ac
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