.................................................................................. 21 6.1 MMA 迁移服务架构 ................................................................................................ 和数据 ................................................................ 32 6.4.3 方案 B：使用 Dataworks 服务迁移 Meta 和数据 ............................................................ 37 6.5 作业迁移............ ............................................................ 55 8.1.2 开通 MaxCompute 和 Dataworks 服务 .......................................................................... 56 8.1.3 安装 MMA Agent

元数据节点 MDS 管理元数据信息 收集集群状态信息，自动调度 • 数据节点 Chunkserver 数据存储 副本一致性 • 客户端 Client 对元数据增删改查 对数据增删改查 • 快照克隆服务器MDS各个组件 MDS是中心节点，负责元数据管理、集群状态收集与调度。MDS包含以下几个部分： • Topology: 管理集群的 topo 元数据信息。 • Nameserver: 管理文件的元数据信息。 器至少是部署在不同的机架，一个server必须归属于一个 zone。 • server: 用于抽象描述一台物理服务器，chunkserver必须 归属一个于server。 • Chunkserver: 用于抽象描述物理服务器上的一块物理磁盘 (SSD)，chunkserver以一块磁盘作为最小的服务单元。TOPOLOGY curve在上物理pool之上又引入逻辑pool的概念，以实现统一存储系统的需求，即在单个存储系统中多副 Order ConfigChange: 将 MDS 下发的任务提交给对应的 对应 模块执行。HEARTBEAT Chunk server的状态更新： • Online: chunk server在线，正常服务。 • Unstable: chunk server一段时间没收到心跳（默认 30s），但是还没有到达offline的时间（默认 30min），chunkserver状态改为unstable状态，打

"Data Access" as DA DA - [First Component] [First Component] ..> HTTP : use note left of HTTP : Web Service only note right of [First Component] A note can also be on several lines end note @enduml individuales Puedes especificar un color despues de la definición del componente. @startuml component [Web Server] #Yellow @enduml 7.12 Using Sprite in Stereotype You can use sprites within stereotype components #777777 } () "Data Access" as DA DA - [First Component] [First Component] ..> () HTTP : use HTTP - [Web Server] << Apache >> @enduml @startuml [AA] <> Guía de Referencia del Lenguaje PlantUML

"Data Access" as DA DA - [First Component] [First Component] ..> HTTP : use note left of HTTP : Web Service only note right of [First Component] A note can also be on several lines end note @enduml individuales Puedes especificar un color despues de la definición del componente. @startuml component [Web Server] #Yellow @enduml 7.12 Using Sprite in Stereotype You can use sprites within stereotype components #777777 } () "Data Access" as DA DA - [First Component] [First Component] ..> () HTTP : use HTTP - [Web Server] << Apache >> @enduml @startuml [AA] <> Guía de Referencia del Lenguaje PlantUML

"Data Access" as DA DA - [First Component] [First Component] ..> HTTP : use note left of HTTP : Web Service only note right of [First Component] A note can also be on several lines end note @enduml individuales Puedes especificar un color despues de la definición del componente. @startuml component [Web Server] #Yellow @enduml 7.12 Using Sprite in Stereotype You can use sprites within stereotype components ArrowFontName Impact ArrowColor #FF6655 ArrowFontColor #777777 } () "Data Access" as DA Component "Web Server" as WS << Apache >> DA - [First Component] [First Component] ..> () HTTP : use HTTP - WS @enduml

"Data Access" as DA DA - [First Component] [First Component] ..> HTTP : use note left of HTTP : Web Service only note right of [First Component] A note can also be on several lines end note @enduml individuales Puedes especificar un color despues de la definición del componente. @startuml component [Web Server] #Yellow @enduml 7.12 Using Sprite in Stereotype You can use sprites within stereotype components #777777 } () "Data Access" as DA DA - [First Component] [First Component] ..> () HTTP : use HTTP - [Web Server] << Apache >> @enduml @startuml [AA] <> Guía de Referencia del Lenguaje PlantUML

"Data Access" as DA DA - [First Component] [First Component] ..> HTTP : use note left of HTTP : Web Service only note right of [First Component] A note can also be on several lines end note @enduml individuales Puedes especificar un color despues de la definición del componente. @startuml component [Web Server] #Yellow @enduml 6.12 Using Sprite in Stereotype You can use sprites within stereotype components #777777 } () "Data Access" as DA DA - [First Component] [First Component] ..> () HTTP : use HTTP - [Web Server] << Apache >> Guía de Referencia del Lenguaje PlantUML (1.2020.23) 111 / 304 6.13 Personalización

"Data Access" as DA DA - [First Component] [First Component] ..> HTTP : use note left of HTTP : Web Service only note right of [First Component] A note can also be on several lines end note @enduml individuales Puedes especificar un color despues de la definición del componente. @startuml component [Web Server] #Yellow @enduml 6.12 Using Sprite in Stereotype You can use sprites within stereotype components #777777 } () "Data Access" as DA DA - [First Component] [First Component] ..> () HTTP : use HTTP - [Web Server] << Apache >> Guía de Referencia del Lenguaje PlantUML (1.2020.22) 100 / 292 6.13 Personalización

"Data Access" as DA DA - [First Component] [First Component] ..> HTTP : use note left of HTTP : Web Service only note right of [First Component] A note can also be on several lines end note @enduml individuales Puedes especificar un color despues de la definición del componente. @startuml component [Web Server] #Yellow @enduml 6.10 Using Sprite in Stereotype You can use sprites within stereotype components PlantUML (1.2019.4) 81 / 165 6.11 Personalización (Skinparam) 6 DIAGRAMA DE COMPONENTES HTTP - [Web Server] << Apache >> @enduml @startuml [AA] <> [BB] <> [CC] <>

"Data Access" as DA DA - [First Component] [First Component] ..> HTTP : use note left of HTTP : Web Service only note right of [First Component] A note can also be on several lines end note @enduml individuales Puedes especificar un color despues de la definición del componente. @startuml component [Web Server] #Yellow @enduml 6.10 Using Sprite in Stereotype You can use sprites within stereotype components PlantUML (1.2019.3) 81 / 157 6.11 Personalización (Skinparam) 6 DIAGRAMA DE COMPONENTES HTTP - [Web Server] << Apache >> @enduml @startuml [AA] <> [BB] <> [CC] <>