Can NameNode and DataNode be a commodity hardware?
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What are the main components of a Hadoop Application?
What are combiners and its purpose?
Explain what happens in textinformat ?
Explain use cases where SequenceFile class can be a good fit?
What are the limitations of importing RDBMS tables into Hcatalog directly?
Define a job tracker?
How can I restart namenode?
What alternate way does HDFS provides to recover data in case a Namenode
Can you tell us more about ssh?
What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
What problems can be addressed by using Zookeeper?
What are active and passive "NameNodes"?
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