What does conf.setmapper class do?
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How to set which framework would be used to run mapreduce program?
how can you debug Hadoop code?
What is the best way to copy files between HDFS clusters?
Explain what is “map” and what is "reducer" in hadoop?
What is Data Locality in Hadoop?
How to submit extra files(jars, static files) for MapReduce job during runtime?
How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
What do you know about nlineinputformat?
Difference between mapreduce and spark
What happens when the node running the map task fails before the map output has been sent to the reducer?
How do you stop a running job gracefully?
Explain what is distributed cache in mapreduce framework?
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