December 2016
Beginner to intermediate
392 pages
8h 13m
English
Content preview from Apache Spark for Data Science Cookbook
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Sampling data
In this recipe, we will see how to generate sample data from the entire population.
Getting ready
To step through this recipe, you need Ubuntu 14.04 (Linux flavor) installed on the machine. Also, have Apache Hadoop 2.6 and Apache Spark 1.6.0 installed. Readers are expected to have knowledge of sampling techniques.
How to do it…
Let's take an example of load prediction data. Here is what the sample data looks like:
Note
Download the data from the following location https://github.com/ChitturiPadma/datasets/blob/master/Loan_Prediction_Data.csv.
- Here is the code for sampling data from a DataFrame:
import org.apache.spark._ import org.apache.spark.sql.SQLContext ...
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