Explain what is sqoop in Hadoop ?
What is formatting of the dfs?
Give the use of the bootstrap panel.
What are the different methods to run Spark over Apache Hadoop?
How did you debug your Hadoop code ?
What is the full form of fsck?
What is Safemode in Apache Hadoop?
Data Engineer Given a list of followers in the format:123, 345234, 678345, 123…Where column one is the ID of the follower and column two is the ID of the followee. Find all mutual following pairs (the pair 123, 345 in the example above). How would you use Map/Reduce to solve the problem when the list does not fit in memory?
What are the additional benefits YARN brings in to Hadoop?
Explain the shuffle?
Command to format the NameNode?
What do you mean by taskinstance?
Why password is needed in ssh localhost?