Who invented hadoop?
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Should we use RAID in Hadoop or not?
What do you know by storage and compute node?
What is Rack Awareness in Apache Hadoop?
What is the functionality of jobtracker in hadoop?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
Define a combiner?
Why are the number of splits equal to the number of maps?
What are the hadoop's three configuration files?
How the Client communicates with HDFS?
what should be the ideal replication factor in hadoop?
Explain a simple Map/Reduce problem.
what is the typical block size of an HDFS block?
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