What is the function of ApplicationMaster?
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What are the basic available commands in Hadoop sqoop ?
Explain how do ‘map’ and ‘reduce’ works?
Can NameNode and DataNode be a commodity hardware?
How would you tackle counting words in several text documents?
Which are the two types of 'writes' in HDFS?
Input Split & Record Reader and what they do?
What are the important differences between apache and hadoop?
Command to format the NameNode?
What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
What is InputSplit and RecordReader?
How many Daemon processes run on a Hadoop system?
What is Input Split in hadoop?
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