How to overwrite an existing output file during execution of mapreduce jobs?
What is shuffling in mapreduce?
Explain how mapreduce works.
How does Mappers run method works?
How to submit extra files(jars, static files) for MapReduce job during runtime?
what is storage and compute nodes?
What is a scarce system resource?
What is shuffleing in mapreduce?
Does Partitioner run in its own JVM or shares with another process?
What do you know about nlineinputformat?
What is SequenceFileInputFormat in Hadoop MapReduce?
Is reduce-only job possible in Hadoop MapReduce?
Define the Use of MapReduce?