What is an input reader in reference to mapreduce?
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what is Speculative Execution?
mapper or reducer?
What happens when a DataNode fails during the write process?
Where the mapper's intermediate data will be stored?
What are the the issues associated with the map and reduce slots based mechanism in mapReduce?
Differentiate Reducer and Combiner in Hadoop MapReduce?
Explain the Reducer's Sort phase?
Explain slot in Hadoop Map-Reduce v1?
What MapReduce framework consists of?
what does the conf.setMapper Class do ?
What do sorting and shuffling do?
Explain about the basic parameters of mapper and reducer function
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