Title:
DISTRIBUTED STORAGE APPARATUS, STORAGE NODE, DATA PROVISION METHOD AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2014/051071
Kind Code:
A1
Abstract:
The objective of the present invention is to allow acquisition of data elements for which times of generation of data from each of a plurality of storage nodes that distribute and store stream data delivered from a device are sufficiently near. A plurality of storage nodes included in a distributed storage apparatus have: a data storage unit which accumulates stream data units output from a device; a first time frame generation unit which generates time frames synchronized between other storage nodes, and associates data elements included in the stream data units accumulated at the data storage unit with any time frame; a data selection unit which, on the basis of an access request from a client terminal, selects data elements that has been associated with a predetermined time frame from among the stream data units that have been accumulated at the data storage unit; and a data transmission unit which transmits data elements that have been selected by the data selection unit to the client terminal.
Inventors:
KOBAYASHI DAI (JP)
YAMAKAWA SATOSHI (JP)
YAMAKAWA SATOSHI (JP)
Application Number:
PCT/JP2013/076309
Publication Date:
April 03, 2014
Filing Date:
September 27, 2013
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G06F12/00; G06F17/30
Foreign References:
| JP2008294774A | 2008-12-04 | |||
| JP2011100359A | 2011-05-19 | |||
| JP2012242845A | 2012-12-10 |
Other References:
K. M. CHANDY; L. LAMPORT: "Distributed Snapshots: Determining Global States of Distributed Systems", ACM TRANSACTIONS ON COMPUTER SYSTEMS, vol. 3, no. 1, February 1985 (1985-02-01), pages 63 - 75
A. FEKETE ET AL.: "Making Snapshot Isolation Serializable", ACM TRANSACTIONS ON DATABASE SYSTEMS, vol. 30, no. 2, June 2005 (2005-06-01), pages 492 - 528
See also references of EP 2902909A4
A. FEKETE ET AL.: "Making Snapshot Isolation Serializable", ACM TRANSACTIONS ON DATABASE SYSTEMS, vol. 30, no. 2, June 2005 (2005-06-01), pages 492 - 528
See also references of EP 2902909A4
Attorney, Agent or Firm:
KATO, Asamichi (JP)
Asamichi Kato (JP)
Asamichi Kato (JP)
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