- The coordinator election problem is to choose a process from among a group of processes on different processors in a distributed system to act as the central coordinator.
- An election algorithm is an algorithm for solving the coordinator election problem. By the nature of the coordinator election problem, any election algorithm must be a distributed algorithm.
-a group of processes on different machines need to choose a coordinator
-peer to peer communication: every process can send messages to every other process.
-Assume that processes have unique IDs, such that one is highest
-Assume that the priority of process Pi is i
There mainly following election algorithms:-
- Bully Election
- Token Ring Election
A. Bully Algorithm
A.1. Implement the Bully algorithm to elect a leader for threads
A.2. Provide 7 Solaris kernel threads T1,T2,T3,T4,T5,T6,T7 such that :T7 is the leader and finishes execution (dies) and T5 is the first thread that finds out.
A.3. Show that threads cooperate to find the new leader.
B. Ring Algorithm
B.1. Implement the Ring Algorithm to elect a leader for threads
B.2. Provide 7 Solaris kernel threads T1,T2,T3,T4,T5,T6,T7 in a ring
such that :
T7 is the leader and finishes execution (dies) and T3 is the first
thread that finds out.
B.3. Show that threads cooperate to find the new leader.