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What is Streaming?



Streaming is a feature with Hadoop framework that allows us to do programming using MapReduce in any programming language which can accept standard input and can produce standard output. It could be Perl, Python, Ruby and not necessarily be Java. However, customization in MapReduce can only be done using Java and not any other programming language.
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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...