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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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Tuning Datanode

In this recipe, we will look at tuning the Datanode by making some important configuration changes. Datanodes are mostly I/O bound, but can have a varied workload for HBase region servers. The network throughout the disks must be tuned for optimal performance.

We will look at parameters only for the Datanode, which in production will come into effect in conjunction with HDFS and Namenode parameters, discussed earlier in this chapter.

Getting ready

For this recipe, you will again need a running cluster and have at least the HDFS daemons running in the cluster.

How to do it...

  1. Connect to the master node master1.cyrus.com and switch to user hadoop.

  2. The hdfs-site.xml file will remain the same in the cluster. Each of the Namenode and Datanode daemons will read its respective parameters, ignoring the others.

  3. Tune the Datanode handler count by using the following configuration in the hdfs-site.xml file:

    <property>
<name>dfs.datanode.handler.count</name>
<value>40...
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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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