What are the main configuration parameters in a MapReduce program?
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Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
What is KeyValueTextInputFormat in Hadoop MapReduce?
What is the fundamental difference between a MapReduce InputSplit and HDFS block?
What is MapReduce?
Detail description of the Reducer phases?
How to specify more than one directory as input in the Hadoop MapReduce Program?
What are ‘reduces’?
What is the difference between a MapReduce InputSplit and HDFS block?
Why is output file name in Hadoop MapReduce part-r-00000?
What is optimal size of a file for distributed cache?
What is identity mapper and identity reducer?
When should you use a reducer?
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