公开(公告)号：US20140258232A1

公开(公告)日：2014-09-11

申请号：US14281508

申请日：2014-05-19

Applicant: Amazon Technologies, Inc.

Inventor： STEFANO STEFANI ,  TIMOTHY ANDREW RATH ,  JAKUB KULESZA ,  WEI XIAO

IPC: G06F17/30

CPC classification number: G06F17/30584 ,  G06F11/1471 ,  G06F11/2023 ,  G06F11/2094

Abstract: A system that implements a data storage service may maintain tables in a data store on behalf of clients. The service may maintain table data in multiple replicas of partitions of the data that are stored on respective computing nodes in the system. In response to detecting a failure or fault condition, or receiving a service request from a client to move or copy a partition replica, the data store may copy a partition replica to another computing node using a physical copy mechanism. The physical copy mechanism may copy table data from physical storage locations in which it is stored to physical storage locations allocated to a destination replica on the other computing node. During copying, service requests to modify table data may be logged and applied to the replica being copied. A catch-up operation may be performed to apply modification requests received during copying to the destination replica.

Abstract translation: 实现数据存储服务的系统可以代表客户端在数据存储中维护表。 该服务可以在存储在系统中的相应计算节点上的数据的分区的多个副本中维护表数据。 响应于检测到故障或故障状况，或者从客户端接收到移动或复制分区副本的服务请求，数据存储可以使用物理复制机制将分区副本复制到另一个计算节点。 物理复制机制可以将表数据从其存储的物理存储位置复制到分配给另一个计算节点上的目标副本的物理存储位置。 在复制期间，可能会记录修改表数据的服务请求并将其应用于复制副本。 可以执行追赶操作以将复制期间接收的修改请求应用于目的地复本。