Table Of ContentWeb Crawling and Data
Mining with Apache Nutch
Perform web crawling and apply data mining in
your application
Dr. Zakir Laliwala
Abdulbasit Shaikh
BIRMINGHAM - MUMBAI
Web Crawling and Data Mining with Apache Nutch
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First published: December 2013
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Cover Image by Jarek Blaminsky ([email protected])
Credits
Authors Project Coordinator
Dr. Zakir Laliwala Ankita Goenka
Abdulbasit Shaikh
Proofreaders
Ameesha Green
Reviewers
Mark Kerzner Bernadette Watkins
Shriram Sridharan
Indexer
Mariammal Chettiyar
Acquisition Editors
Neha Nagwekar
Vinay V. Argekar Graphics
Disha Haria
Commissioning Editor
Deepika Singh Production Coordinator
Conidon Miranda
Technical Editors
Vrinda Nitesh Bhosale Cover Work
Conidon Miranda
Anita Nayak
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Copy Editors
Roshni Banerjee
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Sayanee Mukherjee
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About the Authors
Dr. Zakir Laliwala is an entrepreneur, an open source specialist, and a hands-on
CTO at Attune Infocom. Attune Infocom provides enterprise open source solutions
and services for SOA, BPM, ESB, Portal, cloud computing, and ECM. At Attune
Infocom, he is responsible for product development and the delivery of solutions
and services. He explores new enterprise open source technologies and defines
architecture, roadmaps, and best practices. He has provided consultations and
training to corporations around the world on various open source technologies such
as Mule ESB, Activiti BPM, JBoss jBPM and Drools, Liferay Portal, Alfresco ECM,
JBoss SOA, and cloud computing.
He received a Ph.D. in Information and Communication Technology from Dhirubhai
Ambani Institute of Information and Communication Technology. He was an
adjunct faculty at Dhirubhai Ambani Institute of Information and Communication
Technology (DA-IICT), and he taught Master's degree students at CEPT.
He has published many research papers on web services, SOA, grid computing, and
the semantic web in IEEE, and has participated in ACM International Conferences.
He serves as a reviewer at various international conferences and journals. He has
also published book chapters and written books on open source technologies.
He was a co-author of the books Mule ESB Cookbook and Activiti5 Business Process
Management Beginner's Guide, Packt Publishing.
Abdulbasit Shaikh has more than two years of experience in the IT industry. He
completed his Masters' degree from the Dhirubhai Ambani Institute of Information
and Communication Technology (DA-IICT). He has a lot of experience in open
source technologies. He has worked on a number of open source technologies, such
as Apache Hadoop, Apache Solr, Apache ZooKeeper, Apache Mahout, Apache
Nutch, and Liferay. He has provided training on Apache Nutch, Apache Hadoop,
Apache Mahout, and AWS architect. He is currently working on the OpenStack
technology. He has also delivered projects and training on open source technologies.
He has a very good knowledge of cloud computing, such as AWS and Microsoft
Azure, as he has successfully delivered many projects in cloud computing.
He is a very enthusiastic and active person when he is working on a project or
delivering a project. Currently, he is working as a Java developer at Attune Infocom
Pvt. Ltd. He is totally focused on open source technologies, and he is very much
interested in sharing his knowledge with the open source community.
About the Reviewers
Mark Kerzner holds degrees in Law, Mathematics, and Computer Science. He has
been designing software for many years and Hadoop-based systems since 2008. He
is the President of SHMsoft, a provider of Hadoop applications for various verticals.
He is a co-founder of the Hadoop Illuminated training and consulting firm, and
the co-author of the open source Hadoop Illuminated book. He has authored and co-
authored a number of books and patents.
I would like to acknowledge the help of my colleagues, in particular
Sujee Maniyam, and last but not least, my multitalented family.
Shriram Sridharan is a student at the University of Wisconsin-Madison,
pursuing his Masters' degree in Computer Science. He is currently working in Prof.
Jignesh Patel's research group. His current interests lie in the areas of databases
and distributed systems. He received his Bachelor's degree from the College
of Engineering Guindy, Anna University, Chennai and has two years of work
experience. You can contact him at [email protected].
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Table of Contents
Preface 1
Chapter 1: Getting Started with Apache Nutch 7
Introduction to Apache Nutch 8
Installing and configuring Apache Nutch 8
Installation dependencies 8
Verifying your Apache Nutch installation 13
Crawling your first website 14
Installing Apache Solr 15
Integration of Solr with Nutch 17
Crawling your website using the crawl script 17
Crawling the Web, the CrawlDb, and URL filters 19
InjectorJob 20
GeneratorJob 21
FetcherJob 21
ParserJob 21
DbUpdaterJob 21
Invertlinks 22
Indexing with Apache Solr 22
Parsing and parse filters 22
Webgraph 23
Loops 24
LinkRank 24
ScoreUpdater 25
A scoring example 25
The Apache Nutch plugin 27
The Apache Nutch plugin example 27
Modifying plugin.xml 28
Describing dependencies with the ivy module 29
