Why is output file name in Hadoop MapReduce part-r-00000?
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Explain what does the conf.setmapper class do?
What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?
Explain what is the function of mapreduce partitioner?
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
How to write a custom partitioner for a Hadoop MapReduce job?
How do Hadoop MapReduce works?
What is heartbeat in hdfs?
Explain about the basic parameters of mapper and reducer function
How many Mappers run for a MapReduce job?
What is the job of blend () and repartition () in Map Reduce?
What is shuffling in mapreduce?
Explain how mapreduce works.
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