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After a developer submits code, corresponding test cases arise to ensure the quality of software delivery. Test failures would occur during this period, such as crash, error, and timeout. Since it takes time for developers to resolve them, many duplicate failures will happen during this period. In the delivery practice of SAP HANA, crash triaging is considered as the most timeconsuming task. If duplicate crash failures can be automatically identified, the degree of automation will be significantly enhanced. To find such duplicates, we propose a training-based mathematical model that utilizes component information of SAP HANA to achieve better crash similarity comparison. We implement our approach in a tool named K-Detector (Knowledge-based Detector), which is verified by 11,208 samples and performs 0.986 in AUC (Area Under ROC Curve). Furthermore, we apply KDetector to the production environment, and it can save 97&#x0025; human efforts in crash triage as statistics.

K-Detector: Identifying Duplicate Crash Failures in Large-Scale Software Delivery