Explain about the basic parameters of mapper and reducer function
What do sorting and shuffling do?
What is a MapReduce Combiner?
What are the various input and output types supported by mapreduce?
What is the fundamental difference between a MapReduce InputSplit and HDFS block?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
Why is output file name in Hadoop MapReduce part-r-00000?
Is there any point of learning mapreduce, then?
What is a distributed cache in mapreduce framework?
Which are the methods in the mapper interface?
What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?
Can we submit the mapreduce job from slave node?
What do you mean by data locality?