August 2015
Intermediate to advanced
278 pages
5h 54m
English
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An introduction to schedulers
The scheduler is responsible for providing resources to different tasks of running applications. It is only responsible for scheduling of tasks and is not concerned with status tracking and monitoring of tasks. The scheduler ensures meeting resource requirements in terms of memory, cores, disk, and network for the application. At granular level, it meets the resource requirement of containers running for the particular application. The default scheduler of Hadoop uses a single queue (root queue) to accept and schedule applications. It means that all the applications are submitted to the root queue.
You can view the details of the configured scheduler through ResourceManager web UI at http://<ResourceManager IP>:8088/cluster/scheduler ...
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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.