How many Reducers run for a MapReduce job?
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Explain the differences between a combiner and reducer
What is the difference between a MapReduce InputSplit and HDFS block?
List the configuration parameters that have to be specified when running a MapReduce job.
With the help of two examples name the map and reduce function purpose
What is a TaskInstance?
What is the difference between RDBMS with Hadoop MapReduce?
What is optimal size of a file for distributed cache?
What is the default value of map and reduce max attempts?
what are the basic parameters of a Mapper?
How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?
Explain how mapreduce works.
What is the Job interface in MapReduce framework?
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