| 摘要 |
PROBLEM TO BE SOLVED: To provide a migration processing method automatically rearranging data for a node at a time causing no influence on response performance in a distributed database having a plurality of nodes.SOLUTION: The migration processing method for rearranging data in a system including a distributed database having a plurality of nodes 10 includes: monitoring a load on the system and recognizing a time zone of a low system load as a processing time zone; and when there is a deviation in quantities of held data among the respective nodes such as increasing a new additional node 11 to the distributed database, starting data rearrangement processing in the respective nodes at the processing time zone. |
