公开(公告)号：US20220066886A1

公开(公告)日：2022-03-03

申请号：US17525415

申请日：2021-11-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chuanting WANG ,  Zhongchu ZHU ,  Yuhui XING

IPC: G06F11/14 ,  G06F16/21

Abstract: The present disclosure relates to fault repair methods for a database system. In one example method, when working normally, a master node backs up, to a global buffer pool (GBP) node by using a data transmission protocol with a low latency and a high throughput (for example, a remote direct memory access (RDMA) protocol), a modified page generated because of transaction modification. When the master node is faulty, a standby node does not need to replay all remaining replay logs that are not replayed, but only needs to replay redo logs corresponding to a page that does not exist on the GBP node and pages that are not sequentially arranged and obtain the pages.