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what is the Hadoop MapReduce APIs contract for a key and value class?
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What are the main configuration parameters in a MapReduce program?
How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?
How to specify more than one directory as input in the Hadoop MapReduce Program?
What is shuffling and sorting in Hadoop MapReduce?
Why MapReduce uses the key-value pair to process the data?
What is MapReduce? What are the syntax you use to run a MapReduce program?
What is the purpose of textinputformat?
What are the the issues associated with the map and reduce slots based mechanism in mapReduce?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
Where sorting is done on mapper node or reducer node in MapReduce?
How many InputSplits is made by a Hadoop Framework?
How to set mappers and reducers for MapReduce jobs?
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