Search

What will happen if we run a Mapreduce job with an output directory that already existing ?



Job will fail with org.apache.hadoop.mapred.FileAlreadyExistsException. In this case, delete the output directory and re-execute the job.
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...