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Explain the Reducer's Sort phase?
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What is MapReduce?
how to proceed to write your first mapreducer program?
Explain about the partitioning, shuffle and sort phase
Is YARN a replacement of Hadoop MapReduce?
Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?
Explain InputSplit in Hadoop MapReduce?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
How do ‘map’ and ‘reduce’ work?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
What are the configuration parameters in the 'MapReduce' program?
For a job in Hadoop, is it possible to change the number of mappers to be created?
What are ‘reduces’?
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