Installing the Hadoop and MapReduce packages

Let's install Hadoop and other components such as NameNode, DataNode, MapReduce, secondary NameNode, and so on using the yum command available in RHEL distributions:

  1. Install the components using the following commands:
    sudo yum clean all;
    sudo yum install hadoop-hdfs-namenode
    sudo yum install hadoop-hdfs-secondarynamenode
    sudo yum install hadoop-0.20-mapreduce-tasktrackerhadoop-hdfs-datanode
    sudo yum install hbase
    
  2. Verify whether these components installed successfully using the rpm –qa<hadoop/hbase> command:

    You can start and stop the processes using the following commands:

    /usr/lib/hadoop/bin/hadoop-daemon.sh<start/stop><daemon name>
    /usr/lib/hbase/bin/hbase-daemon.sh<start/stop><daemon name>
    
  3. Be careful ...

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