METHOD FOR PROCESSING DATA

• US 20150100573A1
• Filed: 09/12/2014
• Published: 04/09/2015
• Est. Priority Date: 10/03/2013
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Moue, Hiroki, Tsuchimoto, Yuichi, Murata, Miho, Saeki, Toshiaki, Kobashi, Hiromichi, Yamane, Yasuo
• Application Number:
  US14/484,657
• Publication Number:
  US 20150100573A1
• Time in Patent Office: Days
• US Class Current: 707/736
• CPC Class Codes: G06F 16/2471 Distributed queries
• CPC Class Codes: G06F 16/278 Data partitioning, e.g. horizontal or vertical partitioning

Abstract

A plurality of computers dispersedly store pieces of data and pieces of depository information of the respective pieces of data. The depository information indicates a depository computer storing data of the pieces of data. A first computer of the plurality of computers stores, when depository information of first data is absent in a first storing unit of the first computer, first depository information in the first storing unit. The first depository information indicates the first computer as a first depository computer storing the first data. The first data is stored in a second storing unit of the first computer. The first computer identifies, by searching the first storing unit, a second computer as a second depository computer storing second data to be manipulated in association with third data stored in the second storing unit.

Claims

1. A non-transitory computer-readable recording medium having stored therein a program for causing a first computer of a plurality of computers to execute a process, the plurality of computers dispersedly storing pieces of data and pieces of depository information of the respective pieces of data, the depository information indicating a depository computer storing data of the pieces of data, the process comprising:

storing, when depository information of first data is absent in a first storing unit of the first computer, first depository information in the first storing unit, the first depository information indicating the first computer as a first depository computer storing the first data, the first data being stored in a second storing unit of the first computer; and

identifying, by searching the first storing unit, a second computer as a second depository computer storing second data to be manipulated in association with third data stored in the second storing unit.

2. The non-transitory computer-readable recording medium according to claim 1, wherein the plurality of computers dispersedly store the pieces of depository information on basis of a predetermined rule, the process further comprising:

inquiring of a third computer about the second depository computer when the second computer is not identified by searching the first storing unit, the third computer being identified on basis of the predetermined rule.

3. The non-transitory computer-readable recording medium according to claim 1, the process further comprising:

receiving the second data from the second computer;

storing the received second data in the second storing unit; and

storing, in the first storing unit, second depository information indicating the first computer as the second depository computer.

4. A method for processing data, the method comprising:

dispersedly storing, by a plurality of computers, pieces of data and pieces of depository information of the respective pieces of data, the depository information indicating a depository computer storing data of the pieces of data;

storing by a first computer of the plurality of computers, when depository information of first data is absent in a first storing unit of the first computer, first depository information in the first storing unit, the first depository information indicating the first computer as a first depository computer storing the first data, the first data being stored in a second storing unit of the first computer; and

identifying by the first computer, by searching the first storing unit, a second computer as a second depository computer storing second data to be manipulated in association with third data stored in the second storing unit.

5. The method according to claim 4, wherein the plurality of computers dispersedly store the pieces of depository information on basis of a predetermined rule, the method further comprising;

inquiring of, by the first computer, a third computer about the second depository computer when the second computer is not identified by searching the first storing unit, the third computer being identified on basis of the predetermined rule.

6. The method according to claim 4, further comprising:

receiving, by the first computer, the second data from the second computer;

storing, by the first computer, the received second data in the second storing unit; and

storing in the first storing unit, by the first computer, second depository information indicating the first computer as the second depository computer.