Hadoop DP Notes
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How is the splitting of file invoked in Hadoop Framework ?
It is invoked by the Hadoop framework by running
getInputSplit()
method of the Input format class (like FileInputFormat) defined by the user
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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...