1. A method for performing a remastering operation on resources in a cluster having a plurality of nodes, the method comprising the computer-implemented steps of: identifying a first set of resources, from a group of resources that is mastered by a first node and that is hashed to a first hash table that is used by said first node to access information about resources in said group of resources; wherein resources of said first set of resources are to be migrated to a second node during said remastering operation, and are to be hashed to a second hash table that is used by said second node to access information about resources that are mastered by said second node; identifying, within said first set of resources, a first subset of resources that includes some but not all resources of said first set of resources; transferring, from said first node to said second node, information about one or more resource from said first subset of resources, while freezing no more resources than said first subset of resources from said first set of resources.