morningman commented on a change in pull request #8036:
URL: https://github.com/apache/incubator-doris/pull/8036#discussion_r805305092
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File path: docs/zh-CN/extending-doris/hive-bitmap-udf.md
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@@ -0,0 +1,102 @@
+---
+{
+ "title": "Hive Bitmap UDF",
+ "language": "zh-CN"
+}
+---
+
+<!--
+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.
+-->
+
+# Hive UDF
+
+ Hive Bitmap UDF 提供了在 hive 表中生成 bitmap 、bitmap 运算等 UDF，Hive 中的 bitmap 与 Doris
bitmap 完全一致 ，Hive 中的 bitmap 可以通过 spark bitmap load 导入 doris
+
+ 主要目的：
+ 1. 减少数据导入 doris 时间 , 除去了构建字典、bitmap 预聚合等流程；
+ 2. 节省 hive 存储 ，使用 bitmap 对数据压缩 ，减少了存储成本；
+ 3. 提供在 hive 中 bitmap 的灵活运算 ，比如：用户留存、流失等人群 ，计算后的 bitmap 也可以直接导入 doris；
+
+## 使用方法
+
+### 在 Hive 中创建 Bitmap 类型表
+
+```sql
+
+-- 例子：创建 Hive Bitmap 表
+CREATE TABLE IF NOT EXISTS `hive_bitmap_table`(
+ `k1` int COMMENT '',
+ `k2` String COMMENT '',
+ `k3` String COMMENT '',
+ `uuid` binary COMMENT 'bitmap'
+) comment 'comment'
+
+-- 例子：创建普通 Hive 表
+CREATE TABLE IF NOT EXISTS `hive_table`(
+ `k1` int COMMENT '',
+ `k2` String COMMENT '',
+ `k3` String COMMENT '',
+ `uuid` int COMMENT ''
+) comment 'comment'
+```
+
+### UDF 使用：
+
Review comment:
1. Please add english document
2. Are these commands executed in hive, or in doris?
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