The present invention relates to a method, system and computer readable recording medium for determining a major group in a network split-brain situation that occurs in a network-based distributed computing environment. According to an aspect of the present invention, there is provided a method of determining a major group among at least two groups created by splitting an initial group consisting of a plurality of nodes in a network-based distributed environment, the method comprising the steps of comparing the number of nodes included in a first group with the number of nodes included in a second group; acquiring history information of the nodes included in the first and second groups; and determining whether the first group or the second group is the major group using at least one of a result of comparing the number of nodes and the history information.
Method, system and computer readable recording medium for determining major group under split-brain syndrome