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How does Mappers run method works?
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Where is the output of Mapper written in Hadoop?
Explain the difference between a MapReduce InputSplit and HDFS block?
Explain about the partitioning, shuffle and sort phase
Explain the general mapreduce algorithm
What is a partitioner and how the user can control which key will go to which reducer?
Is reduce-only job possible in Hadoop MapReduce?
what does the conf.setMapper Class do ?
Developing a MapReduce Application?
Whether the output of mapper or output of partitioner written on local disk?
Mention when to use Map reduce mode?
Explain what is the function of mapreduce partitioner?
What is the relationship between Job and Task in Hadoop?
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