How to do ‘map’ and ‘reduce’ works?
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What do you know about the speculative execution?
What is the number of default partitioner in hadoop?
What a task tracker is in hadoop?
What is the key difference between NameNode and DataNode in Hadoop?
According to IBM, what are the three characteristics of Big Data?
List of the some best tools that can be useful for data-analysis?
What is the role of the namenode?
Explain map-only job?
What are 'slaves' and 'masters' in Hadoop?
Explain the core methods of the reducer?
Which database is used in hadoop?
What do you think about the speculative execution?
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