What is shuffling and sorting in mapreduce?
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Explain the general mapreduce algorithm
What is a scarce system resource?
When should you use sequencefileinputformat?
What do you know about nlineinputformat?
What is the Hadoop MapReduce API contract for a key and value Class?
what daemons run on a master node and slave nodes?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
How to set mappers and reducers for Hadoop jobs?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
What does conf.setmapper class do?
In Hadoop, which file controls reporting in Hadoop?
How does fault tolerance work in mapreduce?
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