Explain about the partitioning, shuffle and sort phase
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Whether the output of mapper or output of partitioner written on local disk?
what does the conf.setMapper Class do ?
what job does the conf class do?
What are ‘maps’ and ‘reduces’?
Explain slot in Hadoop Map-Reduce v1?
Mention what is the next step after mapper or maptask?
Clarify what is shuffling in map reduce?
In MapReduce, ideally how many mappers should be configured on a slave?
What is a Distributed Cache in Hadoop?
What are the disservices of utilizing Apache Spark over Hadoop MapReduce?
What is a combiner and where you should use it?
what is JobTracker in Hadoop? What are the actions followed by Hadoop?
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