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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 the network

In this recipe, we will look at tuning the network for better performance. This recipe is very much limited to the operating system parameters and not the optimization of routers or switches.

Getting ready

To step through the recipe in this section, we need at least one node to test and to make the configuration changes, and the same can be applied to all the nodes in the cluster.

How to do it...

  1. Connect to a node which at a later stage will be used to install Hadoop. We are using the node master1.cyrus.com.

  2. Switch as user root or have sudo privileges.

  3. Edit the /etc/sysctl.conf file to tune parameters which affect the network performance. The parameters shown in the next steps need to be changed in this file.

  4. Change the port range by adding the following line:

    net.ipv4.ip_local_port_range = 1024 65535

  5. Enable TCP socket reuse and recycle by using the following line:

    net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1

  6. Tune the SYN backlog queue by adjusting the following values....

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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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