What if rack 2 and datanode fails?
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Explain the shuffle?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
How is HDFS fault tolerant?
Explain how can we change the split size if our commodity hardware has less storage space?
On which port does ssh work?
How to exit the vi editor?
How the Client communicates with HDFS?
Rack awareness of Namenode?
What is NoSQL?
What is the InputFormat ?
What is InputSplit and RecordReader?
What are the limitations of importing RDBMS tables into Hcatalog directly?
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