Hadoop 2.6.0 Multi-Node cluster setup

I have assumed that 10.0.1.1 is my Master Node and 10.0.1.2 and 10.0.1.3 are my slaves.Now ultimately we need to assign following roles.

10.0.1.1 NameNode, DataNode  
10.0.1.2 DataNode  
10.0.1.3 DataNode

First Master node : 10.0.1.1


$ cd $HADOOP_HOME
$ mkdir -p hdfs-data
$ mkdir -p hdfs-site
$ cd etc/hadoop
$ sudo gedit hdfs-site.xml

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Hadoop 2.6.0 Single Node Setup (pseudo-distributed mode)

Hadoop is one of the most popular tool or framework for Big Data today. Usually people say that setting up Hadoop is difficult but it isn’t so. So first we need to check whether java is there or not.


$ java -version

It should show something like : java version “1.6.0_65” Java(TM) SE Runtime Environment (build 1.6.0_65-b14-466.1-11M4716) Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-466.1, mixed mode) If you don’t see something like this then you need to install java first.


$ sudo apt-get install default-jre
$ sudo apt-get install openjdk-7-jdk
$ sudo apt-get install openssh-server
$ sudo apt-get install rsync

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Impact of Microsoft in my life!

IMG_4483Microsoft Technologies always facinating for me. And the major reasons are they are affordable, available to eveyone and this is from where I started my computer journey(Windows 95).

<– My first windows Laptop. Still supports windows 8.1 without any hassle. ❤ That’s the power of windows.

Four ways Microsoft Technologies are helping me:

1. Development:

‘Availble to everyone’ is too much advantaneous for developers like us. Imagine technology available to most of every person who uses computer and plus easiest available way to develop an app.

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castAR : Here is the Future of bridging the physical world with the virtual worlds …

castAR: the most versatile AR & VR system

What is castAR?

castAR is a projected augmented reality system that displays holographic-like 3D projections right in front of you. Star Wars: Episode IV – A New Hope sparked our imaginations of what might be possible in the future by showing R2-D2 and Chewbacca playing a holographic 3D chess-style game. It has taken nearly 35 years since the film was released for this technological dream Continue reading