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Uniform consensus

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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 decide on 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

[edit]
  • Charron-Bost, Bernadette; Schiper, André (April 2004). "Uniform consensus is harder than consensus". Journal of Algorithms. 51 (1): 15–37. doi:10.1016/j.jalgor.2003.11.001.