What are the key differences between Pig vs MapReduce?
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What is Text Input Format?
In mapreduce what is a scarce system resource? Explain?
How to write a custom partitioner for a Hadoop MapReduce job?
What do you know about nlineinputformat?
How to change a number of mappers running on a slave in MapReduce?
What is a combiner and where you should use it?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
Mention what is the hadoop mapreduce apis contract for a key and value class?
What is shuffling in mapreduce?
Explain about the partitioning, shuffle and sort phase in MapReduce?
what are the three modes in which Hadoop can be run?
what is storage and compute nodes?