| 摘要 |
PROBLEM TO BE SOLVED: To provide a data migration processing system and a data migration processing method capable of performing the migration of data while suppressing the processing load of a node constituting a cluster when the removal or addition of the node occurs.SOLUTION: Each of nodes 1 of a data propagation processing system 100 constituting a cluster stores data as the object of message processing in an owner node for storing original data and one or more buddies (copy nodes) for storing the copy of the data. Each node 1 stores the data added with node information including the identifier of the owner node and the identifier of the buddy. Then, when the removal or addition of the node 1 constituting the cluster occurs, each of the existing nodes 1 specifies the owner node and the buddy after the occurrence of the removal or addition about the data, and extracts the data which are not coincident as the result of the comparison of those identifiers with the node information added to the data as data whose propagation processing is necessary, and executes propagation processing in a predetermined timing. |
