February 2019
Beginner to intermediate
544 pages
14h 36m
English
Content preview from Mastering Hadoop 3
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Installing and running our first Spark job
Before Spark, we used to process data using old Hadoop MapReduce jobs. To run MapReduce programs, we need to have a Hadoop cluster in place. It was a very tedious task for developers to test the MapReduce application without the Hadoop cluster. Spark provides the ability to run the applications in both local and cluster mode. The same application can be run on local and cluster mode by changing the Spark configuration. Let's see how you can use Spark to learn, develop, and test your application.
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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.