Install,setup cloudera hadoop on linux

Install cloudera hadoop on linux


This article talks about installing hadoop on single host machine

hadoop is framework for large amount of data processing paralleled

Hadoop implementation provided by different vendors like hortionworks and cloudera.

This article talks about install cloudera hadoop on single machine.

To setup cloudera hadoop, java is required.
if java is not already installed, install JDK 1.6, at least update 8

Please donwnload cloudera-testing.repo from http://archive.cloudera.com/redhat/cdh/ and copy it to /etc/yum.repos.d/ and make sure you update yum command


Please run below commands to install hadoop,hive and pig
$ yum install hadoop-0.20 -y
$ yum install hadoop-hive -y
$ yum install hadoop-pig -y

The above commands installs hadoop to /usr/lib/hadoop folder, hive installs to /usr/lib/hive, pig to /usr/lib/pig

please setup the environment variables as described below in .bash_rc file

$ \vi ~/.bashrc
export HADOOP_HOME=/usr/lib/hadoop
export HIVE_HOME=/usr/lib/hive
export PIG_HOME=/usr/lib/pig
export PATH=$HADOOP_HOME/bin:$PATH:$PIG_HOME/bin:$HIVE_HOME/bin
save it to .bashrc file

$ source ~/.bashrc

Open $HADOOP_HOME/conf/hadoop-env.sh. Add JAVA_HOME path. Ex:
export JAVA_HOME=/usr/java/jdk1.6.0_18

* Open $HADOOP_HOME/conf/core-site.xml. Add the Namenode server name or localhost and port for fs.default.name. Ex:

fs.default.name
hdfs://localhost:9000

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