How to create custom key and custom value in MapReduce Job?
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How to specify more than one directory as input to the MapReduce Job?
In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?
What are the main configuration parameters in a MapReduce program?
In MapReduce, ideally how many mappers should be configured on a slave?
Whether the output of mapper or output of partitioner written on local disk?
What is streaming?
What are the various input and output types supported by mapreduce?
how Hadoop is different from other data processing tools?
what is NameNode in Hadoop?
With the help of two examples name the map and reduce function purpose
How do reducers communicate with each other?
What are the benefits of Spark over MapReduce?
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