What do the master class and the output class do?
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Can Hadoop be compared to NOSQL database like Cassandra?
Mention what is the number of default partitioner in Hadoop?
Why do we need a password-less ssh in fully distributed environment?
How to Administering Hadoop?
Can we have multiple entries in the master files?
how is a file of the size 1 GB uncompressed
Can you explain how do ‘map’ and ‘reduce’ work?
What is the problem with small files in Apache Hadoop?
How the Client communicates with HDFS?
Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?
What happens to a NameNode that has no data?
Is fs.mapr.working.dir a single directory?
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