September 2018
Intermediate to advanced
398 pages
9h 43m
English
Content preview from Scala Programming Projects
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Packaging the assembly JAR
In order to run our application with a Spark distribution, we need to package our compiled classes and their dependencies in a JAR file. This is what we call an assembly JAR or fat JAR: its size can be quite large if you have many dependencies. To do that, we have to modify our SBT build files.
First, we need to enable the assembly plugin. Add a new file, assembly.sbt, in the bitcoin-analyser/project folder and type the following:
addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.14.7"
We also need to exclude all the Spark dependencies from our assembly JAR. There is no point in having them as they are already present in the Spark distribution. Excluding them will save space and build time. For this, we had already ...
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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.