How can one check whether NameNode is working or not?
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What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?
Explain what is sequencefileinputformat?
What is the purpose of context object?
What are 'slaves' and 'masters' in Hadoop?
What does the high availability of a name-node means?
List Hadoop’s three configuration files?
Can you explain record reader?
What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?
What are the tools used in big data?
Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?
What are the side data distribution techniques?
Why does one remove or add nodes in a Hadoop cluster frequently?
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