Can there be no Reducer?
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How data is spilt in Hadoop?
when do reducers play their role in a mapreduce task?
Why Mapreduce output written in local disk?
How hadoop mapreduce works?
How much space will the split occupy in Mapreduce?
What is a combiner and where you should use it?
Why comparison of types is important for MapReduce?
Define MapReduce?
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
Explain what is “map” and what is "reducer" in hadoop?
Explain the Reducer's Sort phase?
how JobTracker schedules a task ?
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