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Is it possible that a Job has 0 reducers ?



Yes, It is legal to set the number of reduce-tasks to zero if no reduction is desired.
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      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...