Phi-Accrual Failure Detector

This is a port of Akka's phi accrual failure detector. Their implementation is tightly coupled with akka-cluster, due to which it's not possible to use it as a stand alone failure detector.

Todo

1. Provide callbacks when a suspicion level is reached
2. Test, test and more tests

Bugs

1. There is a peculiar case when the failure detector wrongly detects a process to have failed if the inter-arrival intervals are 0.

Giving credit when it's due

Phi Accrual Failure Detector

Akka Implementation

Hazelcast Implementation