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Do we need to give a password, even if the key is added in ssh?
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What is difference between split and block in hadoop?
What do masters consist of?
Why do we use Hadoop?
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?
How is the distance between two nodes defined in Hadoop?
What happens to a NameNode that has no data?
shouldn't DFS be able to handle large volumes of data already?
What is speculative execution in Hadoop?
How does a namenode handle the failure of the data nodes?
What does /var/hadoop/pids do?
How to enable recycle bin or trash in hadoop?
How we can change Replication factor when Data is on the fly?
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