What is the key difference between NameNode and DataNode in Hadoop?
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Mention what daemons run on a master node and slave nodes?
Compare Hadoop and RDBMS?
What are some typical functions of job tracker in hadoop?
How many InputSplits will be made by hadoop framework?
What does jps command do in Hadoop?
What is Rack Awareness? What is its need in Hadoop?
What are the core methods of a Reducer?
What does the mapred.job.tracker command do?
Are there any special requirements for namenode?
What are the core components of Hadoop?
What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?
What happens in text format?
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