Hadoop DP Notes
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Can we declare a static variable inside a method ?
No.
Static variables are class level variables and they can’t be declared inside a method. If declared, the
class will not compile
.
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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...