Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?
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What is the use of recordreader in hadoop?
What is a namenode?
How would you check whether your NameNode is working or not?
Explain the core methods of the reducer?
Can we use windows for hadoop?
What is KeyValueTextInputFormat in Hadoop?
What is Mapper? How can we compress Mapper output in Hadoop?
What is a udf?
What is partitioning?
What is hadoop? Name the main components of a hadoop application?
What is distributed copy (distcp)?
Mention what is the difference between an rdbms and hadoop?
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