Clarify what is sqoop in hadoop?
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Why is checkpointing important in hadoop?
List some use cases where classification machine learning algorithms can be used.
If the hadoop administrator needs to make a change, which configuration file does he need to change?
Is Namenode machine same as DataNode machine as in terms of hardware?
Which directory does hadoop install to?
When we send a data to a node, do we allow settling in time, before sending another data to that node?
What does hadoop-env.sh do?
How Big is ‘Big Data’?
What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?
What are the main components of hadoop?
Explain the core methods of the reducer?
What are the differences between hadoop 1 and hadoop 2?
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