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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2020/02/27 10:08:36 UTC

[GitHub] [incubator-doris] EmmyMiao87 commented on a change in pull request #3013: add broker load internal doc

EmmyMiao87 commented on a change in pull request #3013: add broker load internal doc
URL: https://github.com/apache/incubator-doris/pull/3013#discussion_r385000306
 
 

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 File path: docs/documentation/cn/internal/broker_load.md
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+# Doris Broker导入实现解析
+
+## 背景
+
+Doris支持多种导入方式,其中Broker导入是一种最常用的方式,用于实现将分布式存储系统(hdfs、bos等)中的文件导入到doris中。 Broker导入适用的场景是:
+
+- 源数据在Broker可以访问的分布式存储系统中,如HDFS。
+
+- 数据量在20G级别。
+
+## 名词解释
+
+* FE:Frontend,即 Palo 的前端节点。主要负责接收和返回客户端请求、元数据以及集群管理、查询计划生成等工作。关于Doris的架构图,参考[Doris架构介绍](http://doris.incubator.apache.org/)
+* BE:Backend,即 Palo 的后端节点。主要负责数据存储与管理、查询计划执行等工作。
+* Broker:请参考[Broker文档](http://doris.incubator.apache.org/documentation/cn/administrator-guide/broker.html)
+
+## 实现原理
+
+在Broker导入中,用户只要提供一份base表的数据,Doris会为用户进行一下处理:
 
 Review comment:
   感觉应该是提供一份原始数据,因为base 表的数据也可能是聚合后的。

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