The /spl phi/ accrual failure detector

摘要: The detection of failures is a fundamental issue for fault-tolerance in distributed systems. Recently, many people have come to realize that failure ought be provided as some form generic service, similar IP address lookup or time synchronization. However, this has not been successful so far; one the reasons being fact classical detectors were designed satisfy several application requirements simultaneously. We present novel abstraction, called accrual detectors, emphasizes flexibility and expressiveness can serve basic building block implementing Instead providing information binary nature (trust vs. suspect), output suspicion level on continuous scale. principal merit approach it favors nearly complete decoupling between monitoring environment. In paper, we describe an implementation such detector, call /spl phi/ detector. particularity detector dynamically adjusts current network conditions scale which expressed. analyzed behavior our over intercontinental communication link week. Our experimental results show if performs equally well other known adaptive mechanisms, with improved flexibility.