How blocks are distributed among all data nodes for a particular chunk of data?
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What is Writable & WritableComparable interface?
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?
What is hadoop framework?
Explain the use of .mecia class?
What is inputformat in hadoop?
Explain the features of fully distributed mode?
What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?
How we can change Replication factor when Data is on the fly?
How the Client communicates with HDFS?
How a task is scheduled by a jobtracker?
Which data storage components are used by hadoop?
How to Administering Hadoop?
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