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Define Writable data types in MapReduce?
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In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?
Explain Working of MapReduce?
What is RecordReader in a Map Reduce?
Explain what are the basic parameters of a mapper?
What is the input type/format in MapReduce by default?
What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?
What combiners are and when you should use a combiner in a mapreduce job?
Explain slot in Hadoop Map-Reduce v1?
How can we control particular key should go in a specific reducer?
Is there any point of learning mapreduce, then?
How do ‘map’ and ‘reduce’ work?
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
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