How to write a Custom Key Class?
Command to format the NameNode?
How to enable trash/recycle bin in hadoop?
What is a namenode? How many instances of namenode run on a hadoop cluster?
What are different types of filesystem?
How can we change the split size if our commodity hardware has less storage space?
Explain InputFormat?
Is it necessary to know java to learn hadoop?
What are the four characteristics of Big Data?
Explain the basic difference between traditional rdbms and hadoop?
what are Task Tracker and Job Tracker?
Can you tell us more about ssh?
What are the different methods to run Spark over Apache Hadoop?