What are the site-specific configuration files in Hadoop?
What are the modes in which Apache Hadoop run?
How a task is scheduled by a jobtracker?
Define streaming?
Explain the basic architecture of Hadoop?
What is unstructured data?
What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
What is the functionality of jobtracker in hadoop?
What is the InputFormat ?
How to enable recycle bin or trash in hadoop?
What is Safemode in Apache Hadoop?
Does Hadoop requires RAID?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?