Compare Hadoop 2 and Hadoop 3?
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Explain what is storage and compute nodes?
How to create the directory when name node is in safe mode?
How to debug Hadoop code?
Comparison between Secondary NameNode and Checkpoint Node in Hadoop?
If the hadoop administrator needs to make a change, which configuration file does he need to change?
What is LazyOutputFormat in Hadoop?
What is the role of the namenode?
Explain Data Locality in Hadoop?
What is the role of the secondary namenode?
Why would nosql be better than using a sql database? And how much better is it?
What are the port numbers of namenode?
What is single node cluster in Hadoop? for what all purposes Hadoop run on a single node cluster?
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