Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
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What are the network requirements for using hadoop?
What is a spill factor with respect to the ram?
What is IdentityMapper?
What is the difference between HDFS and NAS ?
How to enable recycle bin or trash in hadoop?
What are the site-specific configuration files in Hadoop?
Why are the number of splits equal to the number of maps?
Explain the features of fully distributed mode?
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?
What do sorting do?
What are the two main parts of the hadoop framework?
What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
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