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Learning PySpark

Learning PySpark

By : Drabas, Lee
3.9 (194)
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Learning PySpark

Learning PySpark

3.9 (194)
By: Drabas, Lee

Overview of this book

Apache Spark is an open source framework for efficient cluster computing with a strong interface for data parallelism and fault tolerance. This book will show you how to leverage the power of Python and put it to use in the Spark ecosystem. You will start by getting a firm understanding of the Spark 2.0 architecture and how to set up a Python environment for Spark. You will get familiar with the modules available in PySpark. You will learn how to abstract data with RDDs and DataFrames and understand the streaming capabilities of PySpark. Also, you will get a thorough overview of machine learning capabilities of PySpark using ML and MLlib, graph processing using GraphFrames, and polyglot persistence using Blaze. Finally, you will learn how to deploy your applications to the cloud using the spark-submit command. By the end of this book, you will have established a firm understanding of the Spark Python API and how it can be used to build data-intensive applications.
Table of Contents (13 chapters)
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12
Index

Visualizing flights using D3


To get a powerful and fun visualization of the flight paths and connections in this dataset, we can leverage the Airports D3 visualization (https://mbostock.github.io/d3/talk/20111116/airports.html) within our Databricks notebook. By connecting our GraphFrames, DataFrames, and D3 visualizations, we can visualize the scope of all the flight connections as noted for all on-time or early departing flights within this dataset.

The blue circles represent the vertices (that is, airports) where the size of the circle represents the number of edges (that is, flights) in and out of those airports. The black lines are the edges themselves (that is, flights) and their respective connections to the other vertices (that is, airports). Note for any edges that go offscreen, they are representing vertices (that is, airports) in the states of Hawaii and Alaska.

For this to work, we first create a scala package called d3a that is embedded in our notebook (you can download it from...

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