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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 2. Getting Hadoop Up and Running FREE CHAPTER 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 – writing to multiple sinks


We need one final piece of capability to build such networks, namely, an agent that can write to multiple sinks. Let's create one.

  1. Create the following configuration file as agent7.conf:

    agent7.sources = netsource
    agent7.sinks = hdfssink filesink
    agent7.channels = memorychannel1 memorychannel2
    
    agent7.sources.netsource.type = netcat
    agent7.sources.netsource.bind = localhost
    agent7.sources.netsource.port = 3000
    agent7.sources.netsource.interceptors = ts
    
    agent7.sources.netsource.interceptors.ts.type = org.apache.flume.interceptor.TimestampInterceptor$Builder
    
    agent7.sinks.hdfssink.type = hdfs
    agent7.sinks.hdfssink.hdfs.path = /flume-%Y-%m-%d
    agent7.sinks.hdfssink.hdfs.filePrefix = log
    agent7.sinks.hdfssink.hdfs.rollInterval = 0
    agent7.sinks.hdfssink.hdfs.rollCount = 3
    agent7.sinks.hdfssink.hdfs.fileType = DataStream
    
    agent7.sinks.filesink.type = FILE_ROLL
    agent7.sinks.filesink.sink.directory = /home/hadoop/flume/files
    agent7.sinks.filesink.sink.rollInterval...
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