this programming project, you will develop an n-node distributed system that provides a causally ordered multicasting service

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

Clocks, Multicast, and COMMIT In this programming project, you will develop an n-node distributed system that provides a causally ordered multicasting service and a distributed locking scheme. The distributed system uses logical clock to timestamp messages sent/received between nodes. To start the distributed system, each node should synchronize their logical clocks to the same initial value, based on which the ordering of events can be determined among the machines. For causal ordered multicasting you can use the algorithm discussed in class. Additionally, suppose the distributed nodes have read and write access to a shared file. The last task is to implement a distributed locking scheme that prevents concurrent accesses to the shared file (this is an extra credit bonus assignment). You can use the centralized, decentralized, or the distributed algorithm to realize mutual exclusive access to the file. To simplify the design and testing, the distributed system will be emulated using multiple processes on a single machine. Each process represents a machine and has a unique port number for communication.

Implement the following

Suppose the logical clock on each machine represents the number of messages have been sent and received by this machine. It is actually a counter used by the process (or the machine emulator) to count events. Randomly initialize the logical clock of individual processes and use Berkeley’s algorithm to synchronize these clocks to the average clock. You can select any process as the time daemon to initiate the clock synchronization. After the synchronization, each process prints out its logical clock to check the result of synchronization.

 

Implement the causal ordered multicasting for the distributed system. Create two threads for each process, one for sending the multicast message to other nodes and one for listening to its communication port. Use vector clocks to enforce the order of messages. Once a process delivers a received message to a user, it prints out the message on screen. You can assume that the number of processes (machines) is fixed (equal to or larger than 3) and processes will not fail, join, or leave the distributed system. Implement two versions of this program, one without causally ordered multicasting and one with this feature. Compare the results of the two programs.

Attachments:

Related Questions

. Introgramming & Unix Fall 2018, CRN 44882, Oakland University Homework Assignment 6 - Using Arrays and Functions in C

DescriptionIn this final assignment, the students will demonstrate their ability to apply two ma

. The standard path finding involves finding the (shortest) path from an origin to a destination, typically on a map. This is an

Path finding involves finding a path from A to B. Typically we want the path to have certain properties,such as being the shortest or to avoid going t

. Develop a program to emulate a purchase transaction at a retail store. This program will have two classes, a LineItem class and a Transaction class. The LineItem class will represent an individual

Develop a program to emulate a purchase transaction at a retail store. Thisprogram will have two classes, a LineItem class and a Transaction class. Th

. SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of Sea Ports. Here are the classes and their instance variables we wish to define:

1 Project 1 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of

. Project 2 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of Sea Ports. Here are the classes and their instance variables we wish to define:

1 Project 2 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of