What happens if number of reducers are 0?
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How Big is ‘Big Data’?
What is the difference between TextinputFormat and KeyValueTextInputFormat class?
What does jps command do in Hadoop?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
Explain the core methods of the reducer?
Is hadoop still in demand?
What are input format, input split & record reader and what they do?
What do you understand by unit and ()in scala?
Clarify what is sqoop in hadoop?
What are the port numbers of task tracker?
If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?
List Hadoop’s three configuration files?
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