Clarify what is shuffling in map reduce?
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How to compress mapper output in Hadoop?
Explain what are the basic parameters of a mapper?
Is there any point of learning mapreduce, then?
How data is spilt in Hadoop?
What is heartbeat in hdfs?
What is the Job interface in MapReduce framework?
What is the difference between an RDBMS and Hadoop?
Explain what does the conf.setMapper Class do in MapReduce?
Explain what is distributed cache in mapreduce framework?
What is identity mapper and chain mapper?
Is YARN a replacement of Hadoop MapReduce?
Define Writable data types in MapReduce?
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