Where sorting is done in Hadoop MapReduce Job?
List the network requirements for using Hadoop ?
How to set the number of reducers?
What is a map side join?
Whether the output of mapper or output of partitioner written on local disk?
What is the relationship between Job and Task in Hadoop?
How to get the single file as the output from MapReduce Job?
Explain job scheduling through JobTracker
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
Explain Working of MapReduce?
What do you understand by compute and storage nodes?
What is the fundamental difference between a MapReduce InputSplit and HDFS block?
Is it mandatory to set input and output type/format in MapReduce?