How to configure hadoop to reuse JVM for mappers?
What if a namenode has no data?
How can I install Cloudera VM in my system?
What is structured data?
What are the additional benefits YARN brings in to Hadoop?
Does Hadoop requires RAID?
What are the two main parts of the hadoop framework?
In which location Name Node stores its Metadata and why?
What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
What is nlineoutputformat?
What are the network requirements for using hadoop?