This lab references hosts, users, paths and other details that belong to the Vagrant-provisioned 3 nodes Hadoop cluster.
The Vagrant-provisioned 3 nodes Hadoop cluster should have been started before executing this lab.
Also, all the cluster services must be started as show in the picture below:
Login into Ambari as the user admin and click on admin -> Manage Ambari in the top right corner of the screen.
Now click on Users on the left
Click on ADD USER and create a new user named user1 (set the same password as the user for your convenience):
The user1 should have been created correctly.
Login into Ambari as the user admin and click on admin -> Manage Ambari in the top right corner of the screen.
Now click on Views on the left
Create a new view instance of type files
Now logout from Ambari and login again with the user user1 (password user1)
Open the view you have just created
Within the files view you shoud see the node1's file system as show below
Click on the user folder and you enter in it. Now click on user1 home directory.
Here you can create news directories, open files, upload new files, download them and see all the file's metadata.
Click on Upload and upload the same salaries.csv file we used in the previous lab (you find it in the /datasets folder of this repo).
The file should have been uploaded into the /user/user1 folder
If you want to see some HDFS statistics, you can click here to enter into the Hadoop dashboard.
If you click on the Utilities menu, you can browse the file system as well.
If you go into the /user/user1 folder, you can see the same file you uploaded earlier.
If you click on salaries.csv you get informations about the file and how it has been divided into blocks (1 block only in this case since the file's dimensions are only 16Mb). For each block, you can see on which node the block has been replicated .
