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You're reading from Apache Spark 2.x Machine Learning Cookbook Over 100 recipes to simplify machine learning model implementations with Spark

Product type Paperback

Published in Sep 2017

Publisher Packt

ISBN-13 9781783551606

Length 666 pages

Edition 1st Edition

Languages

Scala

Tools

Apache Spark

Concepts

Machine Learning

Authors (5):

Broderick Hall

Meenakshi Rajendran

Shuen Mei

Mohammed Guller

Siamak Amirghodsi

+1 more

View More author details

Table of Contents (14) Chapters

Preface

1. Practical Machine Learning with Spark Using Scala FREE CHAPTER

2. Just Enough Linear Algebra for Machine Learning with Spark

3. Spark's Three Data Musketeers for Machine Learning - Perfect Together

4. Common Recipes for Implementing a Robust Machine Learning System

5. Practical Machine Learning with Regression and Classification in Spark 2.0 - Part I

6. Practical Machine Learning with Regression and Classification in Spark 2.0 - Part II

7. Recommendation Engine that Scales with Spark

8. Unsupervised Clustering with Apache Spark 2.0

9. Optimization - Going Down the Hill with Gradient Descent

10. Building Machine Learning Systems with Decision Tree and Ensemble Models

11. Curse of High-Dimensionality in Big Data

12. Implementing Text Analytics with Spark 2.0 ML Library

13. Spark Streaming and Machine Learning Library

Getting access to Spark cluster in Spark 2.0

In this recipe, we demonstrate how to get access to a cluster using a single point access named SparkSession. Spark 2.0 abstracts multiple contexts (such as SQLContext, HiveContext) into a single entry point, SparkSession, which allows you to get access to all Spark in a unified way.

How to do it...

Start a new project in IntelliJ or in an IDE of your choice. Make sure that the necessary JAR files are included.
Set up the package location where the program will reside:

package spark.ml.cookbook.chapter4

Import the necessary packages for SparkContext to get access to the cluster.
In Spark 2.x, SparkSession is more commonly used instead.

import org.apache.spark.sql.SparkSession

Create Spark's configuration and SparkSession so we can have access to the cluster:

val spark = SparkSession
.builder
.master("local[*]") // if use cluster master("spark://master:7077")
.appName("myAccesSparkCluster20")
.config("spark.sql.warehouse.dir", ".")
.getOrCreate()

The preceding...