What is Safemode in Apache Hadoop?
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What is IdentityMapper?
Does hadoop always require digital data to process?
What do the master class and the output class do?
What is the problem with small files in Apache Hadoop?
What is Derby database?
What is NoSQL?
Have you ever used Counters in Hadoop. Give us an example scenario?
What are the four characteristics of Big Data?
Which data storage components are used by hadoop?
What is the InputFormat ?
what are the steps involved in commissioning adding
Should we use RAID in Hadoop or not?