Diffrent Flavour of Pig Execution

Diffrent Flavour of Pig Execution

Grunt Shell

This is the default  mode of Pig execution which  interact to shell irrespective of whether the output is sucess or failure.

Syntax 

Local Mode                                             HDFS Mode

Pig -x local (then enter)                               Pig (then enter)
grunt>                                                                   or
                                                              Pig -x mapred
                                                              grunt>

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Script Mode 

Instead of executing transformation at the grunt shell one after another we are going to inscribe bunch of pig statement in a single file which generally we are going to trigger for execution.

Syntax

Local Mode                                                                  HDFS Mode

pig -x local <<scriptname>>                                  pig <<scriptname>>

-x stand for execution mode

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Embedded Mode

If we are not acheiving the desired functionality using the pre-defined function then we can generally go ahead with the User defined function (UDF) i.e we developing the external piece of code and embedding in the main script.

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