What is a task instance in hadoop? Where does it run?
What is the heartbeat used for?
Is it necessary to write jobs for hadoop in the java language?
What do shuffling do?
How to exit the vi editor?
What are the modes in which Apache Hadoop run?
What problems have you faced when you are working on Hadoop code?
What is the purpose of DataNode block scanner?
What is high availability in hadoop?
Mention what is the use of Context Object?
Mention what is the number of default partitioner in Hadoop?
What are the two main parts of the hadoop framework?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?