what is NameNode in Hadoop?
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Define the Use of MapReduce?
How to configure the number of the Combiner in MapReduce?
How many times combiner is called on a mapper node in Hadoop?
In MapReduce how to change the name of the output file from part-r-00000?
How to set the number of reducers?
What are the the issues associated with the map and reduce slots based mechanism in mapReduce?
What is the difference between an RDBMS and Hadoop?
What is Hadoop Map Reduce ?
When Namenode is down what happens to job tracker?
Explain Working of MapReduce?
Mention what are the main configuration parameters that user need to specify to run mapreduce job?
what is JobTracker in Hadoop? What are the actions followed by Hadoop?
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