cku328 commented on a change in pull request #1539: URL: https://github.com/apache/ozone/pull/1539#discussion_r522085164
########## File path: hadoop-hdds/docs/content/concept/Containers.zh.md ########## @@ -0,0 +1,47 @@ +--- +title: Container +weight: 5 +menu: + main: + parent: 概念 +summary: 容器的相关描述，它是Ozone的基本复制单元. +--- + +<!--- + Licensed to the Apache Software Foundation (ASF) under one or more + contributor license agreements. See the NOTICE file distributed with + this work for additional information regarding copyright ownership. + The ASF licenses this file to You under the Apache License, Version 2.0 + (the "License"); you may not use this file except in compliance with + the License. You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +--> + +容器是 Ozone/HDDS 的基本复制单元，由 Storage Container Manager (SCM) 服务管理。 + +容器是可以包含多个块（block）的大型二进制单元： + + + +块作为本地信息，不由 SCM 管理。因此，即使在系统中创建了数十亿个小文件（即创建了数十亿个块），Datanode也仅报告容器的状态，以及复制容器。 + +当 Ozone Manager 向 SCM 请求分配一个新的块时，SCM 将识别一个合适的容器，并且产生一个包含 `ContainerId` + `LocalId` 的块Id，客户端则连接到存储这个容器的 Datanode 上进行读写操作。而 Datanode 则能够基于 `LocalId` 管理这个独立的块。 Review comment: This suggestion is based on [this page](https://ci-hadoop.apache.org/view/Hadoop%20Ozone/job/ozone-doc-master/lastSuccessfulBuild/artifact/hadoop-hdds/docs/public/zh/concept/datanodes.html). I think it just means that `Block ID` consists of `Container ID` and `Local ID`. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
