How is security achieved in Apache Hadoop?
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what is a datanode?
Where is the Mapper Output stored?
Does Hadoop requires RAID?
What is Partioner in hadoop? Where does it run
what should be the ideal replication factor in hadoop?
What is the purpose of DataNode block scanner?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
What is Distributed Cache?
Virtual Box & Ubuntu Installation?
What is Your Cluster size ?
How does an hadoop application look like or their basic components?
What is the difference between Apache Hadoop and RDBMS?
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