公开(公告)号：US08738861B2

公开(公告)日：2014-05-27

申请号：US13708603

申请日：2012-12-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dong Bao ,  Deping Yang

IPC: G06F12/08 ,  G06F9/45

CPC classification number: G06F12/0215 ,  G06F8/4442 ,  G06F12/0862 ,  G06F2212/1024 ,  G06F2212/314 ,  H04L67/2847

Abstract: Embodiments of the present disclosure provide a data prefetching method, a node, and a system. The method includes: a first storage node receives a read request sent by a client, determines a to-be-prefetched data block and a second storage node where the to-be-prefetched data block resides according to a read data block and a set to-be-prefetched data block threshold, and sends a prefetching request to the second storage node, the prefetching request includes identification information of the to-be-prefetched data block, and the identification information is used to identify the to-be-prefetched data block; and the second storage node reads the to-be-prefetched data block from a disk according to the prefetching request, and stores the to-be-prefetched data block in a local buffer, so that the client reads the to-be-prefetched data block from the local buffer of the second storage node.

Abstract translation: 本公开的实施例提供数据预取方法，节点和系统。 该方法包括：第一存储节点接收客户端发送的读取请求，根据读取的数据块和集合确定待预取数据块驻留的待预取数据块和第二存储节点 预取数据块阈值，并且向第二存储节点发送预取请求，预取请求包括待预取数据块的标识信息，并且识别信息用于识别要预取的数据块阈值 数据块 并且第二存储节点根据预取请求从盘读取待预取的数据块，并将待预取的数据块存储在本地缓冲器中，使得客户端读取要预取的数据 从第二个存储节点的本地缓冲区块。

公开(公告)号：US20160217167A1

公开(公告)日：2016-07-28

申请号：US15087053

申请日：2016-03-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang ,  Dong Bao

IPC: G06F17/30 ,  G06F3/06

CPC classification number: G06F16/2228 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/0674 ,  G06F16/2255 ,  G06F16/9024

Abstract: A hash database configuration method and apparatus, where the method includes establishing an index area and a data area on a disk, where the index area includes p disk pages with an equal size, and receiving an allocation request of key-value pairs, allocating m keys in the key-value pairs to disk pages in the index area, and allocating n values in the key-value pairs to the data area, where m, n, and p are all integers greater than 1, and the efficiency of accessing the hash database is improved.

Abstract translation: 一种哈希数据库配置方法和装置，其中所述方法包括在磁盘上建立索引区域和数据区域，其中索引区域包括具有相同大小的p个磁盘页面，并且接收密钥对对的分配请求，分配m 键值对中的键到索引区中的磁盘页，并将键值对中的n个值分配给数据区，其中m，n和p都是大于1的整数，并且访问的效率 哈希数据库得到改进。

公开(公告)号：US10331641B2

公开(公告)日：2019-06-25

申请号：US15087053

申请日：2016-03-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang ,  Dong Bao

IPC: G06F17/30 ,  G06F16/22 ,  G06F16/901 ,  G06F3/06

Abstract: A hash database configuration method and apparatus, where the method includes establishing an index area and a data area on a disk, where the index area includes p disk pages with an equal size, and receiving an allocation request of key-value pairs, allocating m keys in the key-value pairs to disk pages in the index area, and allocating n values in the key-value pairs to the data area, where m, n, and p are all integers greater than 1, and the efficiency of accessing the hash database is improved.

公开(公告)号：US20130097402A1

公开(公告)日：2013-04-18

申请号：US13708603

申请日：2012-12-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dong Bao ,  Deping Yang

IPC: G06F12/02

CPC classification number: G06F12/0215 ,  G06F8/4442 ,  G06F12/0862 ,  G06F2212/1024 ,  G06F2212/314 ,  H04L67/2847

Abstract: Embodiments of the present disclosure provide a data prefetching method, a node, and a system. The method includes: a first storage node receives a read request sent by a client, determines a to-be-prefetched data block and a second storage node where the to-be-prefetched data block resides according to a read data block and a set to-be-prefetched data block threshold, and sends a prefetching request to the second storage node, the prefetching request includes identification information of the to-be-prefetched data block, and the identification information is used to identify the to-be-prefetched data block; and the second storage node reads the to-be-prefetched data block from a disk according to the prefetching request, and stores the to-be-prefetched data block in a local buffer, so that the client reads the to-be-prefetched data block from the local buffer of the second storage node.

Abstract translation: 本公开的实施例提供数据预取方法，节点和系统。 该方法包括：第一存储节点接收客户端发送的读取请求，根据读取的数据块和集合确定待预取数据块驻留的待预取数据块和第二存储节点 预取数据块阈值，并且向第二存储节点发送预取请求，预取请求包括待预取数据块的标识信息，并且识别信息用于识别要预取的数据块阈值 数据块 并且第二存储节点根据预取请求从盘读取待预取的数据块，并将待预取的数据块存储在本地缓冲器中，使得客户端读取要预取的数据 从第二个存储节点的本地缓冲区块。