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You're reading from  Hadoop 2.x Administration Cookbook

Product typeBook
Published inMay 2017
PublisherPackt
ISBN-139781787126732
Edition1st Edition
Tools
Hadoop
Concepts
System Administration
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Author (1)
Aman Singh
Aman Singh
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Aman Singh

Gurmukh Singh is a seasoned technology professional with 14+ years of industry experience in infrastructure design, distributed systems, performance optimization, and networks. He has worked in big data domain for the last 5 years and provides consultancy and training on various technologies. He has worked with companies such as HP, JP Morgan, and Yahoo. He has authored Monitoring Hadoop by Packt Publishing
Read more about Aman Singh

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Hadoop streaming

In this recipe, we will look at how we can execute jobs on an Hadoop cluster using scripts written in Bash or Python. It is not mandatory to use only Java for programming MapReduce code; any language can be used by evoking the Hadoop streaming utility. Do not confuse this with real-time streaming, which is different from what we will be discussing here.

Getting ready

To step through the recipes in this chapter, make sure you have a running cluster with HDFS and YARN setup correctly as discussed in the previous chapters. This can be a single node cluster or a multinode cluster, as long as the cluster is configured correctly.

It is not necessary to know Java to run MapReduce programs on Hadoop. Users can carry forward their existing scripting knowledge and use Bash or Python to run the job on Hadoop.

How to do it...

  1. Connect to an edge node in the cluster and switch to user hadoop.

  2. The streaming JAR is also under the location as Hadoop /opt/cluster/hadoop/share/hadoop/tools/lib/hadoop...

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Hadoop 2.x Administration Cookbook
Published in: May 2017Publisher: PacktISBN-13: 9781787126732
© 2017 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Aman Singh

Gurmukh Singh is a seasoned technology professional with 14+ years of industry experience in infrastructure design, distributed systems, performance optimization, and networks. He has worked in big data domain for the last 5 years and provides consultancy and training on various technologies. He has worked with companies such as HP, JP Morgan, and Yahoo. He has authored Monitoring Hadoop by Packt Publishing
Read more about Aman Singh

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