Why do we need Hadoop?
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Explain what is a sequence file in hadoop?
What is streaming in Hadoop?
What is 'jps'?
While starting hadoop services, datanode service is not running?
What daemons run on master nodes?
What kind of hardware is best for hadoop?
What are some of the characteristics of Hadoop framework?
What are the differences between hadoop 1 and hadoop 2?
How namenode handles data node failures?
What is the relationship between Jobs and Tasks in Hadoop?
What is CAP Theorem? What aspects does Hadoop support from this theorem?
What is a record reader?
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