what is NameNode in Hadoop?
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Define MapReduce?
Mention when to use Map reduce mode?
What happens if the quantity of the reducer is 0 in mapreduce?
When the reducers are are started in a mapreduce job?
What is shuffling and sorting in Hadoop MapReduce?
Explain what is the function of mapreduce partitioner?
What are the various InputFormats in Hadoop?
How does Hadoop Classpath plays a vital role in stopping or starting in Hadoop daemons?
What is the Reducer used for?
Define the purpose of the partition function in mapreduce framework
What are the advantages of using map side join in mapreduce?
what is distributed cache in mapreduce framework?
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