Search

What are the Key/Value Pairs in Mapreduce framework ?



Mapreduce framework implements a data model in which data is represented as key/value pairs. Both input and output data to mapreduce framework should be in key/value pairs only.
Posted by at
Labels:
  • What are the main components of Mapreduce Job ?
      Main driver class which provides job configuration parameters. Mapper class which must extend org.apache.hadoop.mapredu...
  • TO_CHAR
       This will be used to extract various date formats.     The available date formats as follows.     Syntax: to_char ( date , fo...