What is the input type/format in MapReduce by default?
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What is the best way to copy files between HDFS clusters?
What is a distributed cache in mapreduce framework?
What is Mapper in Hadoop MapReduce?
What are the various input and output types supported by mapreduce?
Explain what are the basic parameters of a mapper?
What is a Speculative Execution in Hadoop MapReduce?
Which Sorting algorithm is used in Hadoop MapReduce?
Explain slot in Hadoop Map-Reduce v1?
What combiners are and when you should use a combiner in a mapreduce job?
What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?
What is Distributed Cache in the MapReduce Framework?
what job does the conf class do?