DATABASE SYSTEM UPDATE METHOD AND RELATED APPARATUS

    公开(公告)号:US20240345999A1

    公开(公告)日:2024-10-17

    申请号:US18756014

    申请日:2024-06-27

    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.

    METHOD, APPARATUS, AND SYSTEM FOR IMPLEMENTING HEARTBEAT MECHANISM

    公开(公告)号:US20180309835A1

    公开(公告)日:2018-10-25

    申请号:US16023532

    申请日:2018-06-29

    Inventor: Yanan ZHI Wei CHENG

    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.

    I/O REQUEST PROCESSING METHOD AND STORAGE SYSTEM

    公开(公告)号:US20170132161A1

    公开(公告)日:2017-05-11

    申请号:US15406337

    申请日:2017-01-13

    Inventor: Yu HU Xu WEI Wei CHENG

    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.

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