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What is reduce side join in mapreduce?
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what happens in textinformat ?
How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
For a Hadoop job, how will you write a custom partitioner?
Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?
Explain the input type/format in mapreduce by default?
What is the next step after Mapper or MapTask?
what is storage and compute nodes?
what does the text input format do?
What is the difference between Job and Task in MapReduce?
How can you add the arbitrary key-value pairs in your mapper?
What is Mapper in Hadoop MapReduce?
Explain what does the conf.setMapper Class do in MapReduce?
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