March 2021
Intermediate to advanced
265 pages
6h 50m
Chinese
Content preview from Presto实战
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96
第 7 章
高级连接器实例
第
6
章中，你学习了
Presto
提供的一些连接器以及如何配置它们，本章会把这些知识扩展
到一些比较复杂的使用场景和连接器。这些连接器通常需要翻译来自底层数据源的存储模
式和思想，而这些数据源并不容易映射到
SQL
和
Presto
的面向表的模型上。
若打算通过
Presto
连接并用
SQL
查询特定的系统，你可以直接跳到对应章节来了解更多。
• 7.1
节，用
Phoenix
连接到
Hbase
。
• 7.2
节，键值存储连接器示例：
Accumulo
。
• 7.3
节，
ApacheCassandra
连接器。
• 7.4
节，流系统连接器示例：
Kafka
。
• 7.5
节，文档存储连接器示例：
Elasticsearch
。
在了解这些连接器之后，你可以通过学习
7.6
节
中的联邦查询和相关的
ETL
用法来进一
步完善你的理解。
7.1
用
Phoenix
连接
HBase
分布式、可扩展的大数据存储
Apache HBase
构建在
HDFS
之上，但用户并不一定通过
Hive
连接器访问低层的
HDFS
。
Apache
Phoenix
项目提供了一个
SQL
层来访问
HBase
，得
益于
PrestoPhoenix
连接器，用户可以像其他数据源一样从
Presto
访问
HBase
数据库。
和之前一样，你只需要一个
catalog
文件，比如
etc/catalog/bigtables.properties
。
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.