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Un-Answered Questions { Apache Hadoop }
What is commodity hardware?
Explain what is sqoop in Hadoop ?
Explain how do ‘map’ and ‘reduce’ works?
Explain what is the purpose of RecordReader in Hadoop?
How to restart Namenode?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
Mention what are the data components used by Hadoop?
What does /etc /init.d do?
What is a Combiner?
Main Components of Hadoop?
What are the four characteristics of Big Data?
Mention what is the number of default partitioner in Hadoop?
Explain what happens in textinformat ?
What is Hadoop serialization?
Explain a simple Map/Reduce problem.
