June 2017
Beginner to intermediate
296 pages
7h 4m
English
Content preview from Frank Kane's Taming Big Data with Apache Spark and Python
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Using broadcast variables to display movie names instead of ID numbers
In this section, we'll figure out how to actually include information about the names of the movies in our MovieLens dataset with our Spark job. We'll include them in such a way that they'll get broadcast out to the entire cluster. I'm going to introduce a concept called broadcast variables to do that. There are a few ways we could go about identifying movie names; the most straightforward method would be to just read in the u.item file to look up what movie ID 50 was, see it means Star Wars, load up a giant table in Python, and reference that when we're printing out the results within our driver program at the end. That'd be fine, but what if our executors actually need ...
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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.