What happen when namenode enters in safemode in hadoop?
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What are the port numbers of job tracker?
What is distributed copy (distcp)?
List some use cases where classification machine learning algorithms can be used.
What happens if you don?t override the mapper methods and keep them as it is?
What is Distributed Cache in Hadoop?
Can you explain the common input formats in hadoop?
What is the number of default partitioner in hadoop?
Can you define inputsplit in hadoop?
Is it possible to have hadoop job output in multiple directories? If yes, how?
Clarify what is sqoop in hadoop?
How NameNode tackle Datanode failures in Hadoop?
What is the difference between namenode and datanode in hadoop?
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