Uniform Consensus

In computer science, Uniform Consensus is a distributed computing problem that is a similar to the consensus problem with one more condition which is no two processes (whether faulty or not) decide differently.

More specifically one should consider this problem:

• Each process has an input, should on decide an output (one-shot problem)
• Uniform Agreement: every two decisions are the same
• Validity: every decision is an input of one of the processes
• Termination: eventually all correct processes decide

References

• Uniform consensus is harder than consensus (Bernadette Charron-Bost and André Schiper)