#Install Java a only

lapt-get update qq

lapt-get install -y openjdk-8-jdk

Check Java version

I java version

Download Hadoop 3.3.6

Iwget -q https://archive.apache.org/dist/hadoop/common/hadoop-3.3.6/hadoop-3.3.6.tar.gz

Itar xzf hadoop 3.3.6.tar.gz

Imv hadoop-3.3.6 /usr/local/hadoop

#Set environment variables

import os

os.environ "JAVA HOME"]"/usr/lib/jvm/java-8-openjdk-amd64"

os.environ["HADOOP HOME"] = "/usr/local/hadoop"

os.environ ["PATH"] + ": (os.environ ["HADOOP HOME'])/bin: (os.environ "HADOOP HOME"])/sbin"

#Configure core-site.xml

Ised -i /<configuration>/a

<property>\

<name>fs.defaultFS</name>\

<value>hdfs://localhost:9000</value>\

</property> /usr/local/hadoop/etc/hadoop/core-site.xml

#Configure hdfs-site.xml

Ised -i '/<configuration>/a <property>\

<name>dfs.replication</name>\

<value>1</value>\

</property>\

<name>dfs.namenode.name.dir</name>\

<property>\

<value>file:///usr/local/hadoop/hdfs/namenode</value>\

</property>\

<property>

<name>dfs.datanode.data.dir</name>\

<value>file:///usr/local/hadoop/hdfs/datanode</value>\

</property> /usr/local/hadoop/etc/hadoop/hdfs-site.xml

#Create HDFS directories

Imkdir -p /usr/local/hadoop/hdfs/namenode

Imkdir -p /usr/local/hadoop/hdfs/datanode

#Format the NameNode

Ihdfs namenode-format-force

#Start HDFS daemons

!hdfs-daemon start namenode

Ihdfs-daemon start datanode

Ihdfs-daemon start secondarynamenode

! jps Verify with jps