Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
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What is Distributed Cache in the MapReduce Framework?
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
What is a combiner and where you should use it?
What is identity mapper and chain mapper?
Explain what you understand by speculative execution
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Mention what are the main configuration parameters that user need to specify to run mapreduce job?
Is YARN a replacement of Hadoop MapReduce?
Compare RDBMS with Hadoop MapReduce.
Where is Mapper output stored?
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