Why Mapper runs in heavy weight process and not in a thread in MapReduce?
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What is streaming?
Explain Working of MapReduce?
Clarify what is shuffling in map reduce?
How do reducers communicate with each other?
What is Mapper in Hadoop MapReduce?
What are the various InputFormats in Hadoop?
What is the relation between MapReduce and Hive?
What is MapReduce? What are the syntax you use to run a MapReduce program?
For a job in Hadoop, is it possible to change the number of mappers to be created?
how can you debug Hadoop code?
List the configuration parameters that have to be specified when running a MapReduce job.
What are the primary phases of a Reducer?