Can Hadoop be compared to NOSQL database like Cassandra?
How Mapper is instantiated in a running job?
Command to format the NameNode?
What is a secondary namenode?
What will you do when NameNode is down?
Whats is distributed cache in hadoop?
Define a daemon?
Name the various types of lists supported by bootstrap.
On what basis name node distribute blocks across the data nodes?
What is NoSQL?
Why password is needed in ssh localhost?
Can Apache Kafka be used without Zookeeper?
Explain a simple Map/Reduce problem.