Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying R High Performance Programming
  • Table Of Contents Toc
  • Feedback & Rating feedback
R High Performance Programming

R High Performance Programming

By : Aloysius Shao Qin Lim, Tjhi W Chandra
4.4 (14)
close
close
R High Performance Programming

R High Performance Programming

4.4 (14)
By: Aloysius Shao Qin Lim, Tjhi W Chandra

Overview of this book

This book is for programmers and developers who want to improve the performance of their R programs by making them run faster with large data sets or who are trying to solve a pesky performance problem.
Table of Contents (12 chapters)
close
close
11
Index

Summary

In this chapter, we learned how to set up a Hadoop cluster on Amazon Elastic MapReduce, and how to use the RHadoop family of packages in order to analyze data in HDFS using MapReduce. We saw how the performance of the MapReduce task improves dramatically as more servers are added to the Hadoop cluster, but the performance eventually reaches a limit due to Amdahl's law (Chapter 8, Multiplying Performance with Parallel Computing).

Hadoop and its ecosystem of tools is rapidly evolving. Other tools are being actively developed to make Hadoop perform even better. For example, Apache Spark (http://spark.apache.org/) provides Resilient Distributed Datasets (RDDs) that store data in memory across a Hadoop cluster. This allows data to be read from HDFS once and to be used many times in order to dramatically improve the performance of interactive tasks like data exploration and iterative algorithms like gradient descent or k-means clustering. Another example is Apache Storm (http://storm...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech
bookmark search playlist font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY