公开(公告)号：US20240345999A1

公开(公告)日：2024-10-17

申请号：US18756014

申请日：2024-06-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qiong ZHANG ,  Wei CHENG ,  Biao WANG ,  Hanchen ZHOU ,  Xuli LI ,  Lening CHEN ,  Lin LI ,  Chao MA ,  Yihao SONG

IPC: G06F16/21 ,  G06F16/23 ,  G06F16/27

CPC classification number: G06F16/214 ,  G06F16/2379 ,  G06F16/278

Abstract: This application discloses a database system update method, applied to a database including a first node, a second node, and a shared storage device. The method includes: The first node sends a first instruction to the second node, where the first instruction is used to request storage location information of first data in the shared storage device, and the first data is data transferred by the second node to the first node for processing; and the first node obtains first information sent by the second node, and obtains mapping information from the shared storage device based on the first information, where the mapping information indicates a storage location of the first data in the shared storage device. The method is used to improve update efficiency of the database system, and ensure that different nodes can simultaneously process different data in a shared storage device.

公开(公告)号：US20180309835A1

公开(公告)日：2018-10-25

申请号：US16023532

申请日：2018-06-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yanan ZHI ,  Wei CHENG

IPC: H04L29/08 ,  H04L12/26

CPC classification number: H04L67/145 ,  H04L43/10 ,  H04L67/2842

Abstract: The method, an apparatus and a system for implementing a heartbeat mechanism, so as to reduce a quantity of heartbeat responses sent by a node, and reduce unnecessary resource consumption in a distributed database system. The solution includes: obtaining, a heartbeat request sent by a first node to a second node; recording, a first moment, wherein the first moment is a moment that the heartbeat request is received; querying, according to the identity of the second node from cached information, a second moment, wherein the second moment is a moment that the switching node most recently, where the cached information stores a correspondence between a moment at which the switching node receives a message and an identity of the node; and if an absolute value of a difference between the first moment and the second moment is less than a threshold, sending a heartbeat response to the first node.

公开(公告)号：US20170132161A1

公开(公告)日：2017-05-11

申请号：US15406337

申请日：2017-01-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yu HU ,  Xu WEI ,  Wei CHENG

IPC: G06F13/16 ,  G06F13/42

CPC classification number: G06F13/1642 ,  G06F3/06 ,  G06F3/0613 ,  G06F3/0635 ,  G06F3/0685 ,  G06F3/0689 ,  G06F13/4282

Abstract: An input output (I/O) request processing method is applied to a storage system and includes: receiving an I/O request, where the I/O request carries a size and a to-be-accessed address of the I/O request; determining a type of a to-be-accessed storage device according to the to-be-accessed address; selecting, according to the size of the I/O and the determined device type, from M (physical layers) PHYs configured for the determined device type, a PHY for transmitting the I/O, where the PHYs configured for the storage device of this type are determined according to a total quantity of PHYs in the storage system, a percentage of a quantity of devices of this type in the storage system, and a size of an I/O received by the storage device of this type within a previous access period; and sending the I/O to the storage device by using the selected PHY.