Analytics Tool Misclassified Every Unused Feature Due to Its Own Scanner Events

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Software analytics platform Eventra discovered a significant flaw in its dead-feature detection system, where its own CLI scanner was inadvertently generating synthetic usage events that polluted real-world metrics. When the CLI scanned a codebase and uploaded a catalog of tracked features, each newly discovered feature was routed through the standard event ingestion pipeline, creating a phantom record showing one use by one user. This caused every feature — even those behind disabled flags that no real user had ever touched — to be logged as 'used once and abandoned' rather than 'never used at all.' The distinction matters because the two scenarios require entirely different responses: the former is a product design problem, while the latter is an engineering or instrumentation issue. Billing logic correctly excluded these synthetic events, but the rollup jobs that computed usage statistics did not, meaning the error went undetected for an extended period.

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