Define fault tolerance?
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What platform and java version are required to run hadoop?
What is the purpose of dfsadmin tool?
How can we check whether namenode is working or not?
Explain the features of stand alone (local) mode?
How to restart Namenode?
Command to format the NameNode?
What is the difference between SQL and NoSQL?
Should we use RAID in Hadoop or not?
What are the modes in which Apache Hadoop run?
What is your favourite tool in the hadoop ecosystem?
What is a Task instance in Hadoop? Where does it run?1
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?
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