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Posted to issues@ozone.apache.org by GitBox <gi...@apache.org> on 2020/02/03 07:00:03 UTC
[GitHub] [hadoop-ozone] iamabug opened a new pull request #518: HDDS-2791.
concept/OzoneManager.md translation
iamabug opened a new pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518
## What changes were proposed in this pull request?
one .md file added
## What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/HDDS-2791
## How was this patch tested?
hugo server -D
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[GitHub] [hadoop-ozone] xiaoyuyao commented on a change in pull request
#518: HDDS-2791. concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao commented on a change in pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518#discussion_r377384996
##########
File path: hadoop-hdds/docs/content/concept/OzoneManager.zh.md
##########
@@ -0,0 +1,64 @@
+---
+title: "Ozone Manager"
+date: "2017-09-14"
+weight: 2
+summary: Ozone Manager 是 Ozone 主要的命名空间服务，它管理了卷、桶和键的生命周期。
+---
+<!---
+ 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.
+-->
+
+Ozone Manager（OM）管理 Ozone 的命名空间。
+
+当向 Ozone 写入数据时，你需要向 OM 请求一个块，OM 会返回一个块并记录下相关信息。当你想要读取那个文件时，你也需要先通过 OM 获取那个块的地址。
+
+OM 允许用户在卷和桶下管理键，卷和桶都是命名空间的一部分，也由 OM 管理。
+
+每个卷都是一个独立的命名空间的根元素，这一点和 HDFS 不同，HDFS 提供的是单个根元素的文件系统。
Review comment:
单个根元素->单个根目录
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[GitHub] [hadoop-ozone] xiaoyuyao commented on a change in pull request
#518: HDDS-2791. concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao commented on a change in pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518#discussion_r377798973
##########
File path: hadoop-hdds/docs/content/concept/OzoneManager.zh.md
##########
@@ -0,0 +1,64 @@
+---
+title: "Ozone Manager"
+date: "2017-09-14"
+weight: 2
+summary: Ozone Manager 是 Ozone 主要的命名空间服务，它管理了卷、桶和键的生命周期。
+---
+<!---
+ 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.
+-->
+
+Ozone Manager（OM）管理 Ozone 的命名空间。
+
+当向 Ozone 写入数据时，你需要向 OM 请求一个块，OM 会返回一个块并记录下相关信息。当你想要读取那个文件时，你也需要先通过 OM 获取那个块的地址。
+
+OM 允许用户在卷和桶下管理键，卷和桶都是命名空间的一部分，也由 OM 管理。
+
+每个卷都是一个独立的命名空间的根元素，这一点和 HDFS 不同，HDFS 提供的是单个根元素的文件系统。
+
+Ozone 的命名空间是卷的集合，与 HDFS 中单根的树状结构相比，可以看作是个森林，因此可以非常容易地部署多个 OM 来进行扩展。
+
+## Ozone Manager 元数据
+
+OM 维护了卷、桶和键的列表。它为每个用户维护卷的列表，为每个卷维护桶的列表，为每个桶维护键的列表。
+
+OM 使用 Apache Ratis（Raft 协议的一种实现）来复制 OM 的状态，这为 Ozone 提供了高可用性保证。
+
+
+## Ozone Manager 和 Storage Container Manager
+
+为了方便理解 OM 和 SCM 之间的关系，我们来看看写入键和读取键的过程。
+
+### 写入键
+
+* 为了向 Ozone 中的某个卷下的某个桶的某个键写入数据，用户需要先向 OM 发起写请求，OM 会判断该用户是否有权限写入该键，如果有权限，OM 需要分配给用户一个块用于写数据。
+
+* 要获得一个块，OM 需要向 SCM 发送请求（SCM 是数据节点的管理者），SCM 选择三个数据节点，创建新块并向 OM 返回块 ID。
Review comment:
要获得一个块，OM 需要向 SCM 发送请求=》OM通过SCM请求分配一个块。
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[GitHub] [hadoop-ozone] xiaoyuyao commented on issue #518: HDDS-2791.
concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao commented on issue #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518#issuecomment-589283113
LGTM for the new change. Can you rebase @iamabug?
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[GitHub] [hadoop-ozone] xiaoyuyao commented on a change in pull request
#518: HDDS-2791. concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao commented on a change in pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518#discussion_r377799520
##########
File path: hadoop-hdds/docs/content/concept/OzoneManager.zh.md
##########
@@ -0,0 +1,64 @@
+---
+title: "Ozone Manager"
+date: "2017-09-14"
+weight: 2
+summary: Ozone Manager 是 Ozone 主要的命名空间服务，它管理了卷、桶和键的生命周期。
+---
+<!---
+ 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.
+-->
+
+Ozone Manager（OM）管理 Ozone 的命名空间。
+
+当向 Ozone 写入数据时，你需要向 OM 请求一个块，OM 会返回一个块并记录下相关信息。当你想要读取那个文件时，你也需要先通过 OM 获取那个块的地址。
+
+OM 允许用户在卷和桶下管理键，卷和桶都是命名空间的一部分，也由 OM 管理。
+
+每个卷都是一个独立的命名空间的根元素，这一点和 HDFS 不同，HDFS 提供的是单个根元素的文件系统。
+
+Ozone 的命名空间是卷的集合，与 HDFS 中单根的树状结构相比，可以看作是个森林，因此可以非常容易地部署多个 OM 来进行扩展。
+
+## Ozone Manager 元数据
+
+OM 维护了卷、桶和键的列表。它为每个用户维护卷的列表，为每个卷维护桶的列表，为每个桶维护键的列表。
+
+OM 使用 Apache Ratis（Raft 协议的一种实现）来复制 OM 的状态，这为 Ozone 提供了高可用性保证。
+
+
+## Ozone Manager 和 Storage Container Manager
+
+为了方便理解 OM 和 SCM 之间的关系，我们来看看写入键和读取键的过程。
+
+### 写入键
+
+* 为了向 Ozone 中的某个卷下的某个桶的某个键写入数据，用户需要先向 OM 发起写请求，OM 会判断该用户是否有权限写入该键，如果有权限，OM 需要分配给用户一个块用于写数据。
+
+* 要获得一个块，OM 需要向 SCM 发送请求（SCM 是数据节点的管理者），SCM 选择三个数据节点，创建新块并向 OM 返回块 ID。
Review comment:
创建新块并向 OM 返回块 ID=》分配新块并向 OM 返回块 标识。
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[GitHub] [hadoop-ozone] xiaoyuyao merged pull request #518: HDDS-2791.
concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao merged pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518
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[GitHub] [hadoop-ozone] xiaoyuyao commented on a change in pull request
#518: HDDS-2791. concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao commented on a change in pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518#discussion_r377386069
##########
File path: hadoop-hdds/docs/content/concept/OzoneManager.zh.md
##########
@@ -0,0 +1,64 @@
+---
+title: "Ozone Manager"
+date: "2017-09-14"
+weight: 2
+summary: Ozone Manager 是 Ozone 主要的命名空间服务，它管理了卷、桶和键的生命周期。
+---
+<!---
+ 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.
+-->
+
+Ozone Manager（OM）管理 Ozone 的命名空间。
+
+当向 Ozone 写入数据时，你需要向 OM 请求一个块，OM 会返回一个块并记录下相关信息。当你想要读取那个文件时，你也需要先通过 OM 获取那个块的地址。
+
+OM 允许用户在卷和桶下管理键，卷和桶都是命名空间的一部分，也由 OM 管理。
+
+每个卷都是一个独立的命名空间的根元素，这一点和 HDFS 不同，HDFS 提供的是单个根元素的文件系统。
+
+Ozone 的命名空间是卷的集合，与 HDFS 中单根的树状结构相比，可以看作是个森林，因此可以非常容易地部署多个 OM 来进行扩展。
Review comment:
Ozone 的命名空间是卷的集合，与 HDFS 中单根的树状结构相比，可以看作是个森林=》
与 HDFS 中单根的树状结构相比，Ozone 的命名空间是卷的集合，或者可以看作是个森林。
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[GitHub] [hadoop-ozone] xiaoyuyao commented on a change in pull request
#518: HDDS-2791. concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao commented on a change in pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518#discussion_r377802041
##########
File path: hadoop-hdds/docs/content/concept/OzoneManager.zh.md
##########
@@ -0,0 +1,64 @@
+---
+title: "Ozone Manager"
+date: "2017-09-14"
+weight: 2
+summary: Ozone Manager 是 Ozone 主要的命名空间服务，它管理了卷、桶和键的生命周期。
+---
+<!---
+ 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.
+-->
+
+Ozone Manager（OM）管理 Ozone 的命名空间。
+
+当向 Ozone 写入数据时，你需要向 OM 请求一个块，OM 会返回一个块并记录下相关信息。当你想要读取那个文件时，你也需要先通过 OM 获取那个块的地址。
+
+OM 允许用户在卷和桶下管理键，卷和桶都是命名空间的一部分，也由 OM 管理。
+
+每个卷都是一个独立的命名空间的根元素，这一点和 HDFS 不同，HDFS 提供的是单个根元素的文件系统。
+
+Ozone 的命名空间是卷的集合，与 HDFS 中单根的树状结构相比，可以看作是个森林，因此可以非常容易地部署多个 OM 来进行扩展。
+
+## Ozone Manager 元数据
+
+OM 维护了卷、桶和键的列表。它为每个用户维护卷的列表，为每个卷维护桶的列表，为每个桶维护键的列表。
+
+OM 使用 Apache Ratis（Raft 协议的一种实现）来复制 OM 的状态，这为 Ozone 提供了高可用性保证。
+
+
+## Ozone Manager 和 Storage Container Manager
+
+为了方便理解 OM 和 SCM 之间的关系，我们来看看写入键和读取键的过程。
+
+### 写入键
+
+* 为了向 Ozone 中的某个卷下的某个桶的某个键写入数据，用户需要先向 OM 发起写请求，OM 会判断该用户是否有权限写入该键，如果有权限，OM 需要分配给用户一个块用于写数据。
+
+* 要获得一个块，OM 需要向 SCM 发送请求（SCM 是数据节点的管理者），SCM 选择三个数据节点，创建新块并向 OM 返回块 ID。
+
+* OM 在自己的元数据中记录下块的信息，然后将块和块 token（带有向该块写数据的权限）返回给用户。
+
+* 用户使用块 token 证明自己有权限向该块写入数据，并向对应的数据节点写入数据。
+
+* 数据写入完成后，用户会更新该块在 OM 中的信息。
+
+
+### 读取键
+
+* 键读取相对比较简单，用户首先向 OM 请求块列表。
Review comment:
请求块列表=》请求该键的块列表
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[GitHub] [hadoop-ozone] xiaoyuyao commented on a change in pull request
#518: HDDS-2791. concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao commented on a change in pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518#discussion_r377797493
##########
File path: hadoop-hdds/docs/content/concept/OzoneManager.zh.md
##########
@@ -0,0 +1,64 @@
+---
+title: "Ozone Manager"
+date: "2017-09-14"
+weight: 2
+summary: Ozone Manager 是 Ozone 主要的命名空间服务，它管理了卷、桶和键的生命周期。
+---
+<!---
+ 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.
+-->
+
+Ozone Manager（OM）管理 Ozone 的命名空间。
+
+当向 Ozone 写入数据时，你需要向 OM 请求一个块，OM 会返回一个块并记录下相关信息。当你想要读取那个文件时，你也需要先通过 OM 获取那个块的地址。
+
+OM 允许用户在卷和桶下管理键，卷和桶都是命名空间的一部分，也由 OM 管理。
+
+每个卷都是一个独立的命名空间的根元素，这一点和 HDFS 不同，HDFS 提供的是单个根元素的文件系统。
+
+Ozone 的命名空间是卷的集合，与 HDFS 中单根的树状结构相比，可以看作是个森林，因此可以非常容易地部署多个 OM 来进行扩展。
+
+## Ozone Manager 元数据
+
+OM 维护了卷、桶和键的列表。它为每个用户维护卷的列表，为每个卷维护桶的列表，为每个桶维护键的列表。
+
+OM 使用 Apache Ratis（Raft 协议的一种实现）来复制 OM 的状态，这为 Ozone 提供了高可用性保证。
+
+
+## Ozone Manager 和 Storage Container Manager
+
+为了方便理解 OM 和 SCM 之间的关系，我们来看看写入键和读取键的过程。
+
+### 写入键
+
+* 为了向 Ozone 中的某个卷下的某个桶的某个键写入数据，用户需要先向 OM 发起写请求，OM 会判断该用户是否有权限写入该键，如果有权限，OM 需要分配给用户一个块用于写数据。
Review comment:
如果有权限，OM 需要分配给用户一个块用于写数据。=》如果权限许可，OM分配一个块用于ozone客户端数据写入。
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[GitHub] [hadoop-ozone] xiaoyuyao commented on a change in pull request
#518: HDDS-2791. concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao commented on a change in pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518#discussion_r377385539
##########
File path: hadoop-hdds/docs/content/concept/OzoneManager.zh.md
##########
@@ -0,0 +1,64 @@
+---
+title: "Ozone Manager"
+date: "2017-09-14"
+weight: 2
+summary: Ozone Manager 是 Ozone 主要的命名空间服务，它管理了卷、桶和键的生命周期。
+---
+<!---
+ 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.
+-->
+
+Ozone Manager（OM）管理 Ozone 的命名空间。
+
+当向 Ozone 写入数据时，你需要向 OM 请求一个块，OM 会返回一个块并记录下相关信息。当你想要读取那个文件时，你也需要先通过 OM 获取那个块的地址。
+
+OM 允许用户在卷和桶下管理键，卷和桶都是命名空间的一部分，也由 OM 管理。
+
+每个卷都是一个独立的命名空间的根元素，这一点和 HDFS 不同，HDFS 提供的是单个根元素的文件系统。
Review comment:
每个卷都是一个独立的命名空间的根元素=》每个卷都是OM下的一个独立命名空间的根。
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[GitHub] [hadoop-ozone] xiaoyuyao commented on a change in pull request
#518: HDDS-2791. concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao commented on a change in pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518#discussion_r377801273
##########
File path: hadoop-hdds/docs/content/concept/OzoneManager.zh.md
##########
@@ -0,0 +1,64 @@
+---
+title: "Ozone Manager"
+date: "2017-09-14"
+weight: 2
+summary: Ozone Manager 是 Ozone 主要的命名空间服务，它管理了卷、桶和键的生命周期。
+---
+<!---
+ 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.
+-->
+
+Ozone Manager（OM）管理 Ozone 的命名空间。
+
+当向 Ozone 写入数据时，你需要向 OM 请求一个块，OM 会返回一个块并记录下相关信息。当你想要读取那个文件时，你也需要先通过 OM 获取那个块的地址。
+
+OM 允许用户在卷和桶下管理键，卷和桶都是命名空间的一部分，也由 OM 管理。
+
+每个卷都是一个独立的命名空间的根元素，这一点和 HDFS 不同，HDFS 提供的是单个根元素的文件系统。
+
+Ozone 的命名空间是卷的集合，与 HDFS 中单根的树状结构相比，可以看作是个森林，因此可以非常容易地部署多个 OM 来进行扩展。
+
+## Ozone Manager 元数据
+
+OM 维护了卷、桶和键的列表。它为每个用户维护卷的列表，为每个卷维护桶的列表，为每个桶维护键的列表。
+
+OM 使用 Apache Ratis（Raft 协议的一种实现）来复制 OM 的状态，这为 Ozone 提供了高可用性保证。
+
+
+## Ozone Manager 和 Storage Container Manager
+
+为了方便理解 OM 和 SCM 之间的关系，我们来看看写入键和读取键的过程。
+
+### 写入键
+
+* 为了向 Ozone 中的某个卷下的某个桶的某个键写入数据，用户需要先向 OM 发起写请求，OM 会判断该用户是否有权限写入该键，如果有权限，OM 需要分配给用户一个块用于写数据。
+
+* 要获得一个块，OM 需要向 SCM 发送请求（SCM 是数据节点的管理者），SCM 选择三个数据节点，创建新块并向 OM 返回块 ID。
+
+* OM 在自己的元数据中记录下块的信息，然后将块和块 token（带有向该块写数据的权限）返回给用户。
Review comment:
权限=》授权
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[GitHub] [hadoop-ozone] xiaoyuyao commented on a change in pull request
#518: HDDS-2791. concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao commented on a change in pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518#discussion_r377795301
##########
File path: hadoop-hdds/docs/content/concept/OzoneManager.zh.md
##########
@@ -0,0 +1,64 @@
+---
+title: "Ozone Manager"
+date: "2017-09-14"
+weight: 2
+summary: Ozone Manager 是 Ozone 主要的命名空间服务，它管理了卷、桶和键的生命周期。
+---
+<!---
+ 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.
+-->
+
+Ozone Manager（OM）管理 Ozone 的命名空间。
+
+当向 Ozone 写入数据时，你需要向 OM 请求一个块，OM 会返回一个块并记录下相关信息。当你想要读取那个文件时，你也需要先通过 OM 获取那个块的地址。
+
+OM 允许用户在卷和桶下管理键，卷和桶都是命名空间的一部分，也由 OM 管理。
+
+每个卷都是一个独立的命名空间的根元素，这一点和 HDFS 不同，HDFS 提供的是单个根元素的文件系统。
+
+Ozone 的命名空间是卷的集合，与 HDFS 中单根的树状结构相比，可以看作是个森林，因此可以非常容易地部署多个 OM 来进行扩展。
+
+## Ozone Manager 元数据
+
+OM 维护了卷、桶和键的列表。它为每个用户维护卷的列表，为每个卷维护桶的列表，为每个桶维护键的列表。
+
+OM 使用 Apache Ratis（Raft 协议的一种实现）来复制 OM 的状态，这为 Ozone 提供了高可用性保证。
+
+
+## Ozone Manager 和 Storage Container Manager
+
+为了方便理解 OM 和 SCM 之间的关系，我们来看看写入键和读取键的过程。
+
+### 写入键
+
+* 为了向 Ozone 中的某个卷下的某个桶的某个键写入数据，用户需要先向 OM 发起写请求，OM 会判断该用户是否有权限写入该键，如果有权限，OM 需要分配给用户一个块用于写数据。
Review comment:
用户=>Ozone客户端
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[GitHub] [hadoop-ozone] xiaoyuyao commented on a change in pull request
#518: HDDS-2791. concept/OzoneManager.md translation
Posted by GitBox <gi...@apache.org>.
xiaoyuyao commented on a change in pull request #518: HDDS-2791. concept/OzoneManager.md translation
URL: https://github.com/apache/hadoop-ozone/pull/518#discussion_r377799520
##########
File path: hadoop-hdds/docs/content/concept/OzoneManager.zh.md
##########
@@ -0,0 +1,64 @@
+---
+title: "Ozone Manager"
+date: "2017-09-14"
+weight: 2
+summary: Ozone Manager 是 Ozone 主要的命名空间服务，它管理了卷、桶和键的生命周期。
+---
+<!---
+ 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.
+-->
+
+Ozone Manager（OM）管理 Ozone 的命名空间。
+
+当向 Ozone 写入数据时，你需要向 OM 请求一个块，OM 会返回一个块并记录下相关信息。当你想要读取那个文件时，你也需要先通过 OM 获取那个块的地址。
+
+OM 允许用户在卷和桶下管理键，卷和桶都是命名空间的一部分，也由 OM 管理。
+
+每个卷都是一个独立的命名空间的根元素，这一点和 HDFS 不同，HDFS 提供的是单个根元素的文件系统。
+
+Ozone 的命名空间是卷的集合，与 HDFS 中单根的树状结构相比，可以看作是个森林，因此可以非常容易地部署多个 OM 来进行扩展。
+
+## Ozone Manager 元数据
+
+OM 维护了卷、桶和键的列表。它为每个用户维护卷的列表，为每个卷维护桶的列表，为每个桶维护键的列表。
+
+OM 使用 Apache Ratis（Raft 协议的一种实现）来复制 OM 的状态，这为 Ozone 提供了高可用性保证。
+
+
+## Ozone Manager 和 Storage Container Manager
+
+为了方便理解 OM 和 SCM 之间的关系，我们来看看写入键和读取键的过程。
+
+### 写入键
+
+* 为了向 Ozone 中的某个卷下的某个桶的某个键写入数据，用户需要先向 OM 发起写请求，OM 会判断该用户是否有权限写入该键，如果有权限，OM 需要分配给用户一个块用于写数据。
+
+* 要获得一个块，OM 需要向 SCM 发送请求（SCM 是数据节点的管理者），SCM 选择三个数据节点，创建新块并向 OM 返回块 ID。
Review comment:
创建新块=》分配新块
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