INFORMATION PROCESSOR, DISTRIBUTED DATABASE SYSTEM, AND BACKUP METHOD

摘要

According to one embodiment, a apparatus includes a first module which stores update information includes position information indicating an update position in the data file in a first storage and data to be updated in a second storage, such that update information items includes the update information are stored in contiguous storage areas of the second storage in the order of request of each of the update information items when the data file is requested to be updated, and a second module which stores the update information items stored in the second storage in free space having contiguous addresses of a third storage, in the order of storing in the second storage, if an amount of the update information items in the second storage exceeds a set volume.

主权项

1. An information processing apparatus comprising:
a first storage device configured to store a data file; a second storage device; a first storing module configured to store update information item comprising position information indicating an update position in the data file and data to be updated in the second storage device, such that update information items are stored in contiguous storage areas of the second storage device in the order of request of each of the update information items when the data file is requested to be updated; a third storage device; and a second storing module configured to store the update information items stored in the second storage device in free space having contiguous addresses of the third storage device, in the order of storing in the second storage device, if an amount of the update information items in the second storage device exceeds a set volume.