What are the Basics of Hadoop?
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Explain what if rack 2 and datanode fails?
Why are the number of splits equal to the number of maps?
What is IdentityMapper?
what is difference between int and intwritable?
What do you know about nlineoutputformat?
What is output format in hadoop?
What is a Combiner?
What is the meaning of the term "non-DFS used" in Hadoop web-console?
Is it necessary to write jobs for hadoop in the java language?
What does /var/hadoop/pids do?
Who is a 'user' in HDFS?
What is the function of NodeManager?
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