Explain job scheduling through JobTracker
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When should you use sequencefileinputformat?
Explain what is the function of mapreduce partitioner?
How to set the number of reducers?
Compare RDBMS with Hadoop MapReduce.
How many Mappers run for a MapReduce job?
Explain Working of MapReduce?
What is the default input type in MapReduce?
Explain what is “map” and what is "reducer" in hadoop?
Can there be no Reducer?
Can you tell us how many daemon processes run on a hadoop system?
Why Mapreduce output written in local disk?
What is the core of the job in MapReduce framework?