What is InputFormat in Hadoop MapReduce?
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What are the four essential parameters of a mapper?
What are combiners? When should I use a combiner in my MapReduce Job?
what is a Task Tracker in Hadoop?
what is a sequence file in Hadoop?
How to change a number of mappers running on a slave in MapReduce?
Explain about the partitioning, shuffle and sort phase
Explain Working of MapReduce?
How is reporting controlled in hadoop?
Define speculative execution?
Can we rename the output file?
What are the the issues associated with the map and reduce slots based mechanism in mapReduce?
Why Mapreduce output written in local disk?
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