how can we change Replication Factor?

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What do you know by storage and compute node?

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Can we have multiple entries in the master files?

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Whats is distributed cache in hadoop?

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What is Hadoop serialization?

0 Answers   Capital One,

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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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What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?

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Why do we need a password-less ssh in fully distributed environment?

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Define fault tolerance?

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What do you understand from Node redundancy and is it exist in hadoop cluster?

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Define a namenode?

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What is a namenode? How many instances of namenode run on a hadoop cluster?

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