Why do we use HDFS for applications having large data sets and not when there are lot of small files?
What is yarn in hadoop?
What is partioner in hadoop? Where does it run,mapper or reducer?
How we can take Hadoop out of Safe Mode?
Input Split & Record Reader and what they do?
Can we call vms as pseudos?
What is the meaning of the term "non-DFS used" in Hadoop web-console?
What are the Basics of Hadoop?
Where do you specify the Mapper Implementation?
Is hadoop the future?
What other technologies have you used in hadoop sta ck?
Explain a simple Map/Reduce problem.
What is a Task instance in Hadoop? Where does it run?1