Can NameNode and DataNode be a commodity hardware?
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What is the difference between rdbms and hadoop?
What is the use of Combiner?
Explain what is the purpose of RecordReader in Hadoop?
Is hadoop a memory?
What is a checkpoint?
What happens to a NameNode that has no data?
What are the two main parts of the hadoop framework?
How to change from su to cloudera?
What is a spill factor with respect to the ram?
Explain the core components of hadoop?
How client application interacts with the NameNode?
what is a datanode?
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