What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?
What is MapReduce? What are the syntax you use to run a MapReduce program?
What is the Hadoop MapReduce API contract for a key and value Class?
For a Hadoop job, how will you write a custom partitioner?
What is the InputSplit in map reduce ?
Explain what is “map” and what is "reducer" in hadoop?
What is the difference between map and reduce?
Explain what is the function of mapreduce partitioner?
what are the three modes in which Hadoop can be run?
What is the purpose of textinputformat?
Explain what combiners are and when you should use a combiner in a mapreduce job?
Can MapReduce program be written in any language other than Java?
What MapReduce framework consists of?