................................................................................. 28 6.3.3 数据、作业和 Pipeline 迁移评估 ..................................................................................... .................................................................................. 44 7.1.1 准备工具和环境 ................................................................................................. ....................................................... 49 7.1.7 运行 odps_ddl_runner.py 生成 odps 表和分区 .............................................................. 50 7.1.8 运行 hive_udtf_sql_runner

MDS 陈威Curve 是高性能、高可用、高可靠的分布式存储系统 • 高性能、低延迟 • 可支撑储场景：块存储、对象存储、云原生数据库、EC等 • 当前实现了高性能块存储，对接OpenStack和 K8s 网易内部线上无故障稳定运行一年多 • 已开源 • github主页： https://opencurve.github.io/ • github代码仓库： https://github copyset信息等。 • Scheduler: 调度模块。用于自动容错和负载均衡。TOPOLOGY topology用于管理和组织机器，利用底层机器的放置、网络的规划以面向业务提供如下功能和非功能需求。 1. 故障域的隔离：比如副本的放置分布在不同机器，不同机架，或是不同的交换机下面。 2. 隔离和共享：不同用户的数据可以实现固定物理资源的隔离和共享。 • pool: 用于实现对机器资源进行物理隔离，server不能跨 chunk是数据分片的最小单元。 segment 和 chunk的关系如下图:NAMESERVER Namespace的文件的目录层次关系如右图。 文件的元数据以KV的方式存储。 • Key：ParentID + “/”+ BaseName； • Value：自身的文件ID。 这种方式可以很好地平衡几个需求： • 文件列目录：列出目录下的所有文件和目 录 • 文件查找：查找一个具体的文件 •

===RENDERING=== else -->[no] ===REDIRECT_CHECK=== endif else -->[yes] ===RENDERING=== endif if "is Post?" then -->[yes] "Page.onPost()" --> "Page.onRender()" as render --> ===REDIRECT_CHECK=== else -->[no] variable %set_variable_value("$my_variable", "some_value") An empty string %get_variable_value Retrieve some variable value %get_variable_value("$my_variable") the value of the variable %getenv Retrieve dir, rectangle, "A label") @enduml Notes When mixing sprites macros with other elements you may get a syntax error if, for example, trying to add a rectangle along with classes. In those cases, add {

===RENDERING=== else -->[no] ===REDIRECT_CHECK=== endif else -->[yes] ===RENDERING=== endif if "is Post?" then -->[yes] "Page.onPost()" --> "Page.onRender()" as render --> ===REDIRECT_CHECK=== else -->[no] variable %set_variable_value("$my_variable", "some_value") An empty string %get_variable_value Retrieve some variable value %get_variable_value("$my_variable") the value of the variable %getenv Retrieve dir, rectangle, "A label") @enduml Notes When mixing sprites macros with other elements you may get a syntax error if, for example, trying to add a rectangle along with classes. In those cases, add {

===RENDERING=== else -->[no] ===REDIRECT_CHECK=== endif else -->[yes] ===RENDERING=== endif if "is Post?" then -->[yes] "Page.onPost()" --> "Page.onRender()" as render --> ===REDIRECT_CHECK=== else -->[no] idle Client is idle @Client 0 is send Client -> Server@+25 : GET +25 is await +75 is recv +25 is idle +25 is send Client -> Server@+25 : GET\nIf-Modified-Since: 150 +25 is await +50 is recv +25 is idle 20.2.0 You can even use the GraalVM JavaScript Engine in Java 11 to get rid of the warning messages. Since JLatexMath is bigger, you have to download it separately, then

===RENDERING=== else -->[no] ===REDIRECT_CHECK=== endif else -->[yes] ===RENDERING=== endif if "is Post?" then -->[yes] "Page.onPost()" --> "Page.onRender()" as render --> ===REDIRECT_CHECK=== else -->[no] idle Client is idle @Client 0 is send Client -> Server@+25 : GET +25 is await +75 is recv +25 is idle +25 is send Client -> Server@+25 : GET\nIf-Modified-Since: 150 +25 is await +50 is recv +25 is idle 20.2.0 You can even use the GraalVM JavaScript Engine in Java 11 to get rid of the warning messages. Since JLatexMath is bigger, you have to download it separately, then

===RENDERING=== else -->[no] ===REDIRECT_CHECK=== endif else -->[yes] ===RENDERING=== endif if "is Post?" then -->[yes] "Page.onPost()" --> "Page.onRender()" as render --> ===REDIRECT_CHECK=== else -->[no] idle Client is idle @Client 0 is send Client -> Server@+25 : GET +25 is await +75 is recv +25 is idle +25 is send Client -> Server@+25 : GET\nIf-Modified-Since: 150 +25 is await +50 is recv +25 is idle 20.2.0 You can even use the GraalVM JavaScript Engine in Java 11 to get rid of the warning messages. Since JLatexMath is bigger, you have to download it separately, then

===RENDERING=== else -->[no] ===REDIRECT_CHECK=== endif else -->[yes] ===RENDERING=== endif if "is Post?" then -->[yes] "Page.onPost()" --> "Page.onRender()" as render --> ===REDIRECT_CHECK=== else -->[no] idle Client is idle @Client 0 is send Client -> Server@+25 : GET +25 is await +75 is recv +25 is idle +25 is send Client -> Server@+25 : GET\nIf-Modified-Since: 150 +25 is await +50 is recv +25 is idle 20.2.0 You can even use the GraalVM JavaScript Engine in Java 11 to get rid of the warning messages. Since JLatexMath is bigger, you have to download it separately, then

===RENDERING=== else -->[no] ===REDIRECT_CHECK=== endif else -->[yes] ===RENDERING=== endif if "is Post?" then -->[yes] "Page.onPost()" --> "Page.onRender()" as render --> ===REDIRECT_CHECK=== else -->[no] idle Client is idle @Client 0 is send Client -> Server@+25 : GET +25 is await +75 is recv +25 is idle +25 is send Client -> Server@+25 : GET\nIf-Modified-Since: 150 +25 is await +50 is recv +25 is idle 20.2.0 You can even use the GraalVM JavaScript Engine in Java 11 to get rid of the warning messages. Since JLatexMath is bigger, you have to download it separately, then

===RENDERING=== else -->[no] ===REDIRECT_CHECK=== endif else -->[yes] ===RENDERING=== endif if "is Post?" then -->[yes] "Page.onPost()" --> "Page.onRender()" as render --> ===REDIRECT_CHECK=== else -->[no] dir, rectangle, "A label") @enduml Notes When mixing sprites macros with other elements you may get a syntax error if, for example, trying to add a rectangle along with classes. In those cases, add {