| 摘要 |
PROBLEM TO BE SOLVED: To detect and recover inconsistency occurring between original data and copy data while suppressing a node load.SOLUTION: A node 1 constituting a cluster of a decentralized processing system includes: a storage part 13 which stores a member identifier management table 300 showing identification information on each node 1 constituting the cluster; a data information imparting part 103 which imparts a data identifier of data, being an object of message processing, and owner/buddy information on an owner or buddy holding the data to the data; and a data consistency processing part 106 which extracts, as consistency object data, data meeting both "condition (A) that the owner of the owner/buddy information imparted to the data corresponds to data on the node" and "condition (B) that the data identifier of the data corresponds to data located in an in-charge area of a member of the node in the member identifier management table", and detects and recovers inconsistency occurring between the original data and copy data. |
