301.1.8-Lab of Hadoop

LAB: Hadoop Sandbox

LAB: Demo Hadoop Sandbox

• Install Oracle VM virtual box or VM Player
• Load Hadoop VMware Image

LAB: Starting Hadoop

• Go to home folder

        ls
        cd ..

• Start Hadoop

        start-all.sh

• If above command doesn’t work, then use the following command:

        start-dfs.sh
        start-yarn.sh

• Check name node and data nodes

        jps

LAB: HDFS Files

• The files on HDFS

        hadoop fs -ls /

• Check in the browser

http://localhost:50070

LAB: Copy from Local to HDFS

• Move files to HDFS

        hadoop fs -copyFromLocal /home/hduser/datasets/Stock_Price_Data/stock_price.txt /test_on_dfs

• The files on HDFS

        hadoop fs -ls /

• Delete files from HDFS

        hadoop fs -rmr /test_on_dfs

• The files on HDFS now

        hadoop fs -ls /