From 281222418500b5b4034333b91780fb65d4bf5fdc Mon Sep 17 00:00:00 2001
From: Yang Yu <yuyang_733@163.com>
Date: Thu, 12 Nov 2020 12:27:56 +0800
Subject: [PATCH] HDDS-4079. Create ZH translation of Containers.md in doc.

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 create mode 100644 hadoop-hdds/docs/content/concept/Containers.zh.md

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+---
+title: Containers
+weight: 5
+menu: 
+  main:
+     parent: 概念
+summary: 容器（Ozone的基本复制单元）的相关描述。
+---
+
+<!---
+  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的大型二进制单元：
+
+![Containers](Containers.png)
+
+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），数据节点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 将找到一个合适的容器，并且产生一个包含 `容器ID` + `本地ID` 的块Id，客户端则连接到存储这个容器的数据节点上。而数据节点则能够基于 `本地ID` 管理这个独立的块。
+
+## OPEN 和 CLOSED 容器
+
+当一个容器被创建后，它就以 OPEN 状态开始。而当其被写满（写入约 5GB 数据）时，它就会被关闭并且处于 CLOSED 状态。
+
+OPEN 和 CLOSED 容器之间的根本区别：
+
+OPEN | CLOSED
+-----------------------------------|-----------------------------------------
+可变 | 不可变
+基于 RAFT (Ratis) 进行复制 | 异步地对容器副本进行复制
+只有 Raft leader 用于读/写 | 所有节点都可用于读