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  3. Big Data Fundamentals with PySpark
  • 1

    Introduction to Big Data analysis with Spark

    Free

    This chapter introduces the exciting world of Big Data, as well as the various concepts and different frameworks for processing Big Data. You will understand why Apache Spark is considered the best framework for BigData.

  • 2

    Programming in PySpark RDD’s

    The main abstraction Spark provides is a resilient distributed dataset (RDD), which is the fundamental and backbone data type of this engine. This chapter introduces RDDs and shows how RDDs can be created and executed using RDD Transformations and Actions.

  • 3

    PySpark SQL & DataFrames

    In this chapter, you'll learn about Spark SQL which is a Spark module for structured data processing. It provides a programming abstraction called DataFrames and can also act as a distributed SQL query engine. This chapter shows how Spark SQL allows you to use DataFrames in Python.

  • 4

    Machine Learning with PySpark MLlib

    PySpark MLlib is the Apache Spark scalable machine learning library in Python consisting of common learning algorithms and utilities. Throughout this last chapter, you'll learn important Machine Learning algorithms. You will build a movie recommendation engine and a spam filter, and use k-means clustering.

Initializing

Exercise

Filter and Count

The RDD transformation filter() returns a new RDD containing only the elements that satisfy a particular function. It is useful for filtering large datasets based on a keyword. For this exercise, you'll filter out lines containing keyword Spark from fileRDD RDD which consists of lines of text from the README.md file. Next, you'll count the total number of lines containing the keyword Spark and finally print the first 4 lines of the filtered RDD.

Remember, you already have a SparkContext sc, file_path, and fileRDD available in your workspace.

Instructions

100 XP
  • Create filter() transformation to select the lines containing the keyword Spark.
  • How many lines in fileRDD_filter contain the keyword Spark?
  • Print the first four lines of the resulting RDD.