公开(公告)号：US10135926B2

公开(公告)日：2018-11-20

申请号：US14919135

申请日：2015-10-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Ki Sung Jin ,  Young Chang Kim ,  Young Kyun Kim ,  Hong Yeon Kim ,  Wan Choi

IPC: G06F17/30 ,  H04L29/08

Abstract: Provided herein is a shuffle embedded distributed storage system and method supporting virtual merge, the system and method including a distributed shared storage configured to store a virtual merged file; a plurality of map servers connected to the distributed shared storage via a network, and configured to perform a map function and record a map result data computed as a result of the map function in the distributed shared storage by means of a map result file; and a plurality of reduce servers connected to the distributed shared storage and the map servers via the network, wherein the virtual merged file includes a list of the map result files recorded by the plurality of map servers, and an identifier of a reduce server to which the virtual merged file is to be transmitted.

公开(公告)号：US09892129B2

公开(公告)日：2018-02-13

申请号：US15158781

申请日：2016-05-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jeong Sook Park ,  Young Chang Kim ,  Young Kyun Kim ,  Hong Yeon Kim

IPC: G06F15/16 ,  G06F17/30 ,  G06F11/20 ,  H04L29/08 ,  H04L29/06

CPC classification number: G06F17/302 ,  G06F11/16 ,  G06F11/2033 ,  G06F2201/805 ,  H04L67/06 ,  H04L67/1097

Abstract: A distributed file system based on a torus network includes a plurality of metadata servers configured to store metadata of files, a plurality of data servers configured to divide data and store the divided data in a distributed manner, and at least one management server configured to manage the metadata servers and the data servers. The plurality of metadata servers, the plurality of data servers, and the at least one management server are disposed on first to nth planes each of which consists of a plurality of nodes, and the first plane is connected to a plurality of clients through a switch.

公开(公告)号：US09804965B2

公开(公告)日：2017-10-31

申请号：US14848841

申请日：2015-09-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young Chang Kim ,  Ki Sung Jin ,  Young Kyun Kim ,  Hong Yeon Kim ,  Wan Choi

IPC: G06F12/08 ,  G06F12/0862 ,  G06F9/44 ,  G06F9/455

CPC classification number: G06F12/0862 ,  G06F9/4401 ,  G06F9/45558 ,  G06F2009/45579 ,  G06F2212/6026

Abstract: A virtual machine host server includes a virtual machine in which a guest operating system is installed and operated, a cache manager for processing at least one of an open request, a close request, and an input/output request for a disk image file of the virtual machine, which is stored in a storage system, and managing a boot workload map and a boot segment, a cache device for caching the boot segment, and a prefetch manager for prefetching the boot segment from the cache device.