What is the non dfs used?
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Can you explain commodity hardware?
Name the most common Input Formats defined in Hadoop? Which one is default?
Explain the core methods of the reducer?
Why is Data Block size set to 128 MB in Hadoop?
What are the common types of NOSQL data bases ?
Why do we need Hadoop Archives? How is it created?
What are 'slaves' and 'masters' in Hadoop?
What is hadoop? Name the main components of a hadoop application?
What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?
Mention what are the most common input formats defined in hadoop?
Define a udf?
Explain how can you check whether namenode is working beside using the jps command?
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