Mention what are the main configuration parameters that user need to specify to run MapReduce Job?

Question

What are all the parameters that need to be specified before a MR operation?

Answer 1

The parameters that need to be specified for the Hadoop MR framework are:

• The input address of the input file(s) in the HDFS address.
• The output address of the output file(s) in the HDFS address.
• The format of the input.
• The format of the output.
• The class which contains the Map function. 
• The class which contains the Reducer function.
• The JAR file that wraps all of the mapper, reducer and driver classes up.