Installing Hive on Ubuntu

Question

I want to install Hive on my Ubuntu.I read this Article,that help me so much.I did all of steps except step 4.I didn't understand exactly what should in this step do.

could you please explain me this step in detail ?

Answer 1

Step 1 : Download and Extract Hadoop

Step 2 : Set JAVA_HOME path to conf/hadoop-env.sh //This step is to set java path for hadoop

Step 3 : conf/core-site.xml:

<configuration>
  <property>
    <name>fs.default.name</name>  //Place your home folder here for using hadoop 
    <value>hdfs://localhost:9000</value>
  </property>
</configuration>

Step 4 : conf/hdfs-site.xml:

<configuration>          //This setting for the number of replications of the file or you can add data node for the save the file
  <property>
    <name>dfs.replication</name>
    <value>1</value>
  </property>
</configuration>

Step 5 : conf/mapred-site.xml:

<configuration>
  <property>
    <name>mapred.job.tracker</name>
    <value>localhost:9001</value>        // add your master host in the place of localhost here
  </property>
</configuration>

Step 6 : Login SSH localhost and Format a new distributed-filesystem

bin/hadoop namenode -format

Step 7 : Start the hadoop daemons:

bin/start-all.sh

Step 8 : Check the NameNode & JobTracker below port

http://localhost:50070/       //master
http://localhost:50030/       //slave  

// Its is also better to try the ssh for check your working nodes

Step 9 : Download and Extract Hive

Step 10 : Set below Env variables.

export HADOOP_HOME=<hadoop-install-dir>
export HIVE_HOME=<hive-install-dir>
export PATH=$HIVE_HOME/bin:$PATH
$HIVE_HOME/bin/hive