Is hadoop still in demand?
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Where is hadoop-env.sh file present?
What are the core methods of a Reducer?
What daemons run on master nodes?
Why does one remove or add nodes in a Hadoop cluster frequently?
What is Mapper? How can we compress Mapper output in Hadoop?
Clarify what is sequence file input format?
Explain small file problem in hadoop
What is the default replication factor and how will you change it?
How many maps are there in a particular job?
List out the some common problems faced by data analyst?
What is throughput in Hadoop?
Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?
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