Why Mapreduce output written in local disk?
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What is a scarce system resource?
What is a combiner and where you should use it?
What is mapreduce algorithm?
How to write MapReduce Programs?
What are the configuration parameters in the 'MapReduce' program?
what is distributed cache in mapreduce framework?
How to optimize Hadoop MapReduce Job?
What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?
what is the Hadoop MapReduce APIs contract for a key and value class?
Why Mapper runs in heavy weight process and not in a thread in MapReduce?
when do reducers play their role in a mapreduce task?
List out Hadoop's three configuration files?
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