March 2021
Intermediate to advanced
265 pages
6h 50m
Chinese
Content preview from Presto实战
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
106
｜
第
7
章
不同主题内的
Kafka
消息可能使用不同的格式，
Kafka
连接器包括了最常见格式的解码器，
如
Raw
、
JSON
、
CSV
和
A
vro
等。
有关配置属性、映射和其他内部列的详细信息可在
Presto
文档中找到，参见
1.4.3
节。
将
Presto
与
Kafka
一起使用
，既可以为
Kafka
的数据流开启新的分析与洞察能力，也定义了
Presto
另一个有价值的用途。另一个
Presto
支持的类似用途的流处理系统是
AmazonKinesis
1
。
7.5
文档存储连接器示例
：
Elasticsearch
Presto
包含一些知名文档存储系统的连接器，如
Elasticsearch
或
MongoDB
。这些系统支持
存储和检索
JSON
文档形式的信息
。
Elasticsearch
更适合于索引和搜索文档，而
MongoDB
则是一个通用的文档存储。
7.5.1
概述
Presto
连接器允许用户使用
SQL
访问这些系统并查询其中的数据，即使这些系统没有原生
SQL
访问。
Elasticsearch
集群
经常用于存储日志数据或其他事件流，以便长期存储，甚至永久存储。
这些数据集都是系统在运行中和各种场景下产生的日志数据，往往体量非常大，这些日志
可以帮我们更好地了解系统。
Elasticsearch
和
Presto
是一个强大且性能优异的组合
，因为这两个系统都可以横向扩展。
Presto
通过将一个查询分解并在集群中的许多工作节点上运行来进行扩展。
Elasticsearch
通常在自己的集群上运行
，也可以横向扩展。它可以跨多个节点对索引分片，
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.