I want solution to this question., JAVA Programming

Assignment Help:

This assignment is based on the principles of clock consistency and associated drifts in a distributed system. You have to create a simulation, running on a single machine, of a simple distributed system involving four process objects (PO). Each PO will contain a logical clock, a concept first proposed by Lamport.1 The concept of the logical clocks and associated synchronization, based on the following rules, will attempt to resolve the clock consistency in this system:
1. Each event (internal, send, or receive) in the system is associated with a time-stamp, based on logical clocks.
2. Each PO, Pi, will have an associated logical clock, LCi. This logical clock is implemented as a simple counter that is incremented whenever an event takes place within that PO. Since a logical clock has a monotonically increasing value, it assigns a unique number to every event. The time stamp of an event is the value of the logical clock for that event. Hence, if an event A occurs before an event B in Pi, then LCi(A) < LCi(B).
3. A Pi will randomly decide if it wants to carry out an internal event or send a message to some other Pj. If it decides to send a message to a randomly selected Pj then it will attach the value of its logical clock to that message. A Pi may also decide to receive a message from another Pj if that Pj has sent a message to the Pi earlier.
4. Whenever a Pj receives a message from another Pi, it will advance its logical clock if the time stamp associated with the incoming message is greater than or equal to the current value of its logical clock, i.e., if Pj, receives a message (event B) from Pi with a time stamp t and LCj(B) = t then Pj should advance its logical clock such that LCj (B) is equal to t + 1.
5. Any Pi, in the system, may exhibit Byzantine or arbitrary failures when it receives a message – e.g., it may choose not to advance its logical clock at all.
Your task is to:
1. Propose the interaction and failure models for this system. Discuss the pros and cons of your design.
2. Simulate this entire environment in C++ or Java using threads. Allow the simulation to reach a steady-state, i.e., run the program for a large number of iterations. During each iteration and at the end of the simulation compare the values of the logical clocks of POs – this comparison should indicate the clock drifts and their synchronizations. Repeat the simulation with different probabilities and access their effects on the clock drifts.
3. Create a brief report that indicates the aforementioned models and the analyses of the results of your simulation.

Related Discussions:- I want solution to this question.

Why processing an unknown number of parameters, Why Processing An Unknown N...

Why Processing An Unknown Number Of Parameters ? Most of the time you have a fairly high-quality idea of what parameters will and won't be passed to your applet. Therefore som

Difference between while statement and a do while statement, What is the di...

What is the difference between a while statement and a do while statement? A while statement checks at the starting of a loop to see whether the next loop iteration should occu

Convert encrypted hsql database into csv format, Project Description: We...

Project Description: We have an encrypted HSQL Database which we need to convert into CSV format. HSQL DB . We have java application jar file which reads that database but no

Basic difference b/w finalize(), 1.   final - it is a constant declarati...

1.   final - it is a constant declaration. 2.   finally - handles exception. The finally block is optional and gives a mechanism to clean up regardless of what occurs within

Alreadyboundexception thrown and by which method, When is AlreadyBoundExcep...

When is AlreadyBoundException thrown and by which method? Ans) AlreadyBoundException is thrown by bind(String name) method when a remote object is already registered with the re

Pseudocode, Create an application for an animal-fur trimming service. The b...

Create an application for an animal-fur trimming service. The business is open 15 weeks of the year, from April through July. The fee for a small animal (under 6 pounds) is $100, a

Authentication -security component, Authentication is basically an identifi...

Authentication is basically an identification step. Functionality used for J2EE security: Principal : An entity that may be authenticated and identified. Principal n

Need java, Need JAVA,SPRING,JSF(primefaces) Application Support Project ...

Need JAVA,SPRING,JSF(primefaces) Application Support Project Description: We want someone to be part of our team's new development, it's minute application but in future, cha

Intro to Programming, Overall Requirements Every phone number is broken up ...

Overall Requirements Every phone number is broken up into sections as shown below: Country Code Area Code Prefix Line Number 1 919 882 5000 Write a program to separate out a ph

What are the two important tcp socket classes, Socket and ServerSocket. Ser...

Socket and ServerSocket. ServerSocket is used for normal two-way socket communication. Socket class permits us to read and write by the sockets. getInputStream() and getOutputStrea

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd