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Hadoop Beginner's Guide

You're reading from   Hadoop Beginner's Guide Get your mountain of data under control with Hadoop. This guide requires no prior knowledge of the software or cloud services ‚Äì just a willingness to learn the basics from this practical step-by-step tutorial.

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Product type Paperback
Published in Feb 2013
Publisher Packt
ISBN-13 9781849517300
Length 398 pages
Edition 1st Edition
Tools
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Toc

Table of Contents (19) Chapters Close

Hadoop Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. What It's All About FREE CHAPTER 2. Getting Hadoop Up and Running 3. Understanding MapReduce 4. Developing MapReduce Programs 5. Advanced MapReduce Techniques 6. When Things Break 7. Keeping Things Running 8. A Relational View on Data with Hive 9. Working with Relational Databases 10. Data Collection with Flume 11. Where to Go Next Pop Quiz Answers Index

Time for action – multi level Flume networks


Let's put together a few pieces we touched on earlier and see how one Flume agent can use another as its sink.

  1. Create the following file as agent6.conf:

    agent6.sources = avrosource
    agent6.sinks = avrosink
    agent6.channels = memorychannel
    
    agent6.sources.avrosource.type = avro
    agent6.sources.avrosource.bind = localhost
    agent6.sources.avrosource.port = 2000
    agent6.sources.avrosource.threads = 5
    
    agent6.sinks.avrosink.type = avro
    agent6.sinks.avrosink.hostname = localhost
    agent6.sinks.avrosink.port = 4000
    
    agent6.channels.memorychannel.type = memory
    agent6.channels.memorychannel.capacity = 1000
    agent6.channels.memorychannel.transactionCapacity = 100
    
    agent6.sources.avrosource.channels = memorychannel
    agent6.sinks.avrosink.channel = memorychannel
  2. Start an agent configured as per the agent3.conf file created earlier, that is, with an Avro source and a file sink:

    $ flume-ng client –conf conf –conf-file agent3.conf agent3  
    
  3. In a second window, start another...

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