October 2015
Beginner to intermediate
254 pages
5h 31m
English
Content preview from Scala Data Analysis Cookbook (new)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,
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Building the Uber JAR
The first step for deploying our Spark application on a cluster is to bundle it into a single Uber JAR, also known as the assembly JAR. In this recipe, we'll be looking at how to use the SBT assembly plugin to generate the assembly JAR. We'll be using this assembly JAR in subsequent recipes when we run Spark in distributed mode. We could alternatively set dependent JARs using the spark.driver.extraClassPath property (https://spark.apache.org/docs/1.3.1/configuration.html#runtime-environment). However, for a large number of dependent JARs, this is inconvenient.
How to do it...
The goal of building the assembly JAR is to build a single, Fat JAR that contains all dependencies and our Spark application. Refer to the following screenshot, ...
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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.
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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.