Hadoop DP Notes
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Why are the number of splits equal to the number of maps?
The number of maps is equal to the number of input splits because we want the key and value pairs of all the input splits.
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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...