What does /etc /init.d do?
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How many instances of JobTracker can run on a Hadoop Cluser?
explain Metadata in Namenode?
Where is the Mapper Output stored?
Explain a simple Map/Reduce problem.
Explain what is sqoop in Hadoop ?
How is security achieved in Apache Hadoop?
How is the option in Hadoop to skip the bad records?
Explain the features of fully distributed mode?
How to Administering Hadoop?
What do sorting do?
How would you use Map/Reduce to split a very large graph into smaller pieces and parallelize the computation of edges according to the fast/dynamic change of data?
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?