FaultFuzz: A Coverage Guided Fault Injection Tool for Distributed Systems
Wenhan Feng, Qiugen Pei, Yu Gao, Dong Wang, Wensheng Dou, Jun Wei, Zheheng Liang, Zhenyue Long · 2024
Distributed systems are expected to correctly recover from various faults, e.g., node crash / reboot and network disconnection / reconnection. However, faults that occur under special timing can trigger fault recovery bugs that are rooted in incorrect fault recovery protocols and implementations. Existing random and brute-force fault injection approaches are not effective in revealing fault recovery bugs due to the combinatorial explosion of multiple faults in distributed systems.