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Multicoordinated Agreement Protocols and the Log ServiceDoctoral Dissertation • June 7th, 2008
slow and limited links connecting nodes in different groups. In such environments, latency is clearly a major concern and reconfiguration procedures that render the agreement protocol momentarily unavailable must be avoided as much as possible. Our contribution here is in avoiding reconfigurations and improving the availability of a collision fast agreement protocol. That is, a protocol that can reach agreement in two intergroup communication steps, irrespectively to concurrent proposals. Be- sides the use of a multicoordinated approach, we employed multicast primitives and consensus to restrict some reconfigurations to within groups, where they are less expensive.
