Abstract: There is provided a method and system for scheduling a job in a cluster, the cluster comprises multiple computing nodes, and the method comprises: defining rules for constructing virtual sub-clusters of the multiple computing nodes; constructing the multiple nodes in the cluster into multiple virtual sub-clusters based on the rules, wherein one computing node can only be included in one virtual sub-cluster; dispatching a received job to a selected virtual sub-cluster; and scheduling at least one computing node for the dispatched job in the selected virtual sub-cluster. Further, the job is dispatched to the selected virtual sub-cluster based on characteristics of the job and/or characteristics of virtual sub-clusters.