Can we call vms as pseudos?
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What is the use of Combiner?
What do the master class and the output class do?
What is output format in hadoop?
What do masters consist of?
Why is hadoop faster?
How many JVMs run on a slave node?
How to resolve small file problem in hdfs?
Explain the Job OutputFormat?
What is rack-aware replica placement policy?
Define a daemon?
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 Writable & WritableComparable interface?