July 2023
Intermediate to advanced
278 pages
5h 40m
Chinese
Content preview from Trino 权威指南：原书第2版
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229
第 12 章
生产环境中的 Trino
在学习
Trino
的过程中，第
2
章介绍了探索性安装
Trino
的简单方法，第
5
章介绍了
Trino
的部署，而本章将更进一步地深入细节。毕竟，简单地安装和配置集群与维持其
长时间运行非常不同，后者具有不同的用户、不断变化的数据源和完全独立的用法。
因此，本章将进一步探索
Trino
集群操作者必备的其他方面的知识。
12.1
使用
Trino Web UI
进行监控
如
3.5
节所述，你可以在每个
Trino
集群的协调器上访问其
Web UI
，它可以用来检查和
监控
Trino
集群及其处理的查询。
Web UI
所提供的细节信息可用于帮你更好地理解和调
优
Trino
的整体系统以及单个查询。
Trino Web UI
暴露的信息来自
Trino
的系统表，
8.2
节有详细介绍。
当你第一次访问
Trino Web UI
所在地址时，可以看到如图
12-1
所示的主仪表盘，其上
方显示
Trino
集群的信息，下方显示查询列表。
12.1.1
集群级细节
下面先来讨论
Trino
集群的信息。
Running Query
（运行中的查询）
Trino
集群中当前正在运行的查询总数。所有用户的查询都会计入，例如，
Alice
运
行着
2
个查询且
Bob
运行着
5
个查询，则在对应方框里显示的总数是
7
。
Trino权威指南 正文7z-最后.indd 229Trino权威指南 正文7z-最后.indd 229 2023-8-4 14:04:132023-8-4 14:04:13
230
|
第
12
章
图 12-1：Trino Web ...
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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.