What are the four essential parameters of a mapper?
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What is identity mapper and reducer? In which cases can we use them?
What is Distributed Cache in the MapReduce Framework?
What is map/reduce job in hadoop?
Explain what you understand by speculative execution
What do you understand by compute and storage nodes?
Explain the general mapreduce algorithm
How to change the name of the output file from part-r-00000 in Hadoop MapReduce?
How to get the single file as the output from MapReduce Job?
Explain what is the function of mapreduce partitioner?
What are the four basic parameters of a reducer?
In Hadoop, which file controls reporting in Hadoop?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
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