What are the advantages of using mapreduce with hadoop?
what are the most common input formats defined in Hadoop?
Illustrate a simple example of the working of MapReduce.
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
What is a Distributed Cache in Hadoop?
How do reducers communicate with each other?
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
What are the main components of MapReduce Job?
Explain what does the conf.setmapper class do?
Is it possible to search for files using wildcards?
Where is the output of Mapper written in Hadoop?
What are the four basic parameters of a reducer?
What are the identity mapper and reducer in MapReduce?