Should we use RAID in Hadoop or not?

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What platform and java version are required to run hadoop?

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How to come out of the insert mode?

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Can Hadoop be compared to NOSQL database like Cassandra?

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Is hadoop a database?

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What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?

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Data Engineer Given a list of followers in the format:123, 345234, 678345, 123…Where column one is the ID of the follower and column two is the ID of the followee. Find all mutual following pairs (the pair 123, 345 in the example above). How would you use Map/Reduce to solve the problem when the list does not fit in memory?

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Explain the features of fully distributed mode?

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Did you ever ran into a lop sided job that resulted in out of memory error

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What are the Basics of Hadoop?

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What are the functions of NameNode?

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What are active and passive "NameNodes"?

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