April 2022
Beginner to intermediate
486 pages
10h 22m
Chinese
Content preview from 云端基因组学
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.
在
Terra
平台快捷运行多个工作流
｜
337
你流水线的瓶颈，总运行时间可能因此而显著增加。可抢占实例所节省成本是否值
得你因冒险使用它而导致流水线运行时间大幅提升，这个问题很重要，需仔细评估。
以我们经验，如大规模数据处理结果别人下周才要，那么我们可以用可抢占主机。
但我们若为了给两天后的会议出演示作品而疯狂赶进度，那么我们索性关闭可抢占
主机，尽快用普通主机，无非多花点钱而已。
图
11
-
30
：计时图展示计算资源被抢占的调用（从顶部数第
2
、
12
和
13
条绿线）
11.2.4
在数据表定位工作流输出
我们注意到图
11-27
所示工作流详情包含输出文件位置标识符。运行特定工作流所
得输出结果，用这种方式定位，非常优雅，但所处理样本高达数以百计乃至千计，
该方式不易扩展，就更不必提数十万样本了（是的，有人真处理这么大规模的数
据——生活在这个时代，是不是令人兴奋？）。
你若用数据表，还有一种更好的方式。你若正在处理大规模数据，你就需要这么做。
方法如下：你借助一个小配置技巧，就可以让系统自动添加工作流输出到数据表。
我们当然已在我们让你运行的工作流配置中启用该功能，因此让我们来查看数据表，
以确认它是否起作用，如图
11-31
所示。
就是该列！如图
11-31
所示，
book_sample
表新增
output_gvcf
列，而且我们在上面
338
｜
第
11
章
运行工作流的所有样本现在都有了文件路径，这些路径对应工作流运行所生成的
GVCF
文件。
图
11
-
31
：数据表显示有新生成的 output_gvcf 列
那么，新列名来自哪里？我们回头看 ...
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.