presto-main/src/main/java/io/prestosql/failuredetector/FailureDetectorConfig.java/FailureDetectorConfig/getFailureRatioThreshold
class FailureDetectorConfig:    @DecimalMin("0.0")
    @DecimalMax("1.0")
    public double getFailureRatioThreshold()
    {
        return failureRatioThreshold;
    }