Explain what is the purpose of RecordReader in Hadoop?
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How many instances of JobTracker can run on a Hadoop Cluser?
Explain a simple Map/Reduce problem.
Virtual Box & Ubuntu Installation?
What is Apache Hadoop? Why is Hadoop essential for every Big Data application?
What is the InputFormat ?
What do you mean by taskinstance?
Which one is default InputFormat in Hadoop ?
What is the difference between Apache Hadoop and RDBMS?
What is the functionality of jobtracker in hadoop?
On what basis Namenode will decide which datanode to write on?
What do masters consist of?
What are the important differences between apache and hadoop?
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