[GitHub] [hadoop-ozone] xiaoyuyao commented on a change in pull request #1516: HDDS-3731. [doc]add storage space quota document.

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xiaoyuyao commented on a change in pull request #1516:
URL: https://github.com/apache/hadoop-ozone/pull/1516#discussion_r510360994



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File path: hadoop-hdds/docs/content/feature/Quota.md
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@@ -0,0 +1,67 @@
+---
+title: "Quota in Ozone"
+date: "2020-October-22"
+weight: 4
+summary: Quota in Ozone
+icon: user
+menu:
+   main:
+      parent: Features
+summary: Introduction to Ozone Quota
+---
+<!---
+  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.
+-->
+
+So far, we know that Ozone allows users to create volumes, buckets, and keys. A Volume usually contains several buckets, and each Bucket also contains a certain number of keys. Obviously, it should allow the user to define quotas (for example, how many buckets can be created under a Volume or how much space can be used by a Bucket), which is a common requirement for storage systems.
+
+## Currently supported
+1. Storage Space level quota
+
+Administrators should be able to define how much storage space a Volume or Bucket can use.
+
+## Client usage
+### Storage Space level quota
+Storage space level quotas allow the use of units such as KB (k), MB (m), GB (g), TB (t), PB (p), etc. Represents how many storage Spaces will be used.

Review comment:
       how many => how much




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