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What is RecordReader in a Map Reduce?
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What is an identity mapper and identity reducer?
What is Hadoop Map Reduce ?
Explain task granularity
When is it not recommended to use MapReduce paradigm for large scale data processing?
Explain how mapreduce works.
What is the role of a MapReduce partitioner?
What is a partitioner and how the user can control which key will go to which reducer?
How to configure the number of the Combiner in MapReduce?
What is KeyValueTextInputFormat in Hadoop MapReduce?
How does Hadoop Classpath plays a vital role in stopping or starting in Hadoop daemons?
Explain the input type/format in mapreduce by default?
What is the sequence of execution of Mapper, Combiner, and Partitioner in MapReduce?
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