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What is the default input type in MapReduce?
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Explain what are the basic parameters of a mapper?
when do reducers play their role in a mapreduce task?
What are ‘maps’ and ‘reduces’?
When is it suggested to use a combiner in a MapReduce job?
What is heartbeat in hdfs?
What does a 'MapReduce Partitioner' do?
What combiners are and when you should utilize a combiner in a map reduce job?
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What is a TaskInstance?
What is the Hadoop MapReduce API contract for a key and value Class?
Explain about the partitioning, shuffle and sort phase in MapReduce?
How to submit extra files(jars, static files) for Hadoop MapReduce job during runtime?
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