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Tag: pig script

pig tutorial 13 – pig example to implement custom store function

July, 2017 adarsh Leave a comment

The Pig load/store API is aligned with Hadoop’s InputFormat and OutputFormat classes. This enables you to create new LoadFunc and…

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Posted in: Data Analytics, Pig, pig latin Filed under: pig latin, pig script

pig tutorial 12 – pig example to implement custom load function

adarsh Leave a comment

The Pig load/store API is aligned with Hadoop’s InputFormat and OutputFormat classes. This enables you to create new LoadFunc and…

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Posted in: Data Analytics, Pig, pig latin Filed under: pig latin, pig script

pig tutorial 11 – pig example to implement custom filter functions

adarsh Leave a comment

Filter functions are eval functions that return a boolean value. Filter functions can be used anywhere a Boolean expression is…

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Posted in: Data Analytics, Pig, pig latin Filed under: pig latin, pig script

pig tutorial 10 – pig aggregate function with algebraic interface and accumulator interface

adarsh Leave a comment

An aggregate function is an eval function that takes a bag and returns a scalar value. One interesting and useful…

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Posted in: Data Analytics, Pig, pig latin Filed under: pig latin, pig script

pig tutorial 9 – pig example to implement custom eval function for foreach

adarsh Leave a comment

Eval is the most common type of function. It can be used in FOREACH statements.Lets take an example Input Data…

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Posted in: Data Analytics, Pig, pig latin Filed under: pig latin, pig script

pig tutorial 8 – performance tuning and optimizing a pig script

adarsh Leave a comment

Below are the pointers which can be considered to optimize a pig script 1. If types are not specified in…

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Posted in: Data Analytics, performance tuning, Pig, pig latin Filed under: pig latin, pig performance tuning, pig script

pig tutorial 7 – pig load and store functions with compression and shell, file and utility commands

adarsh Leave a comment

Load/Store functions determine how data goes into Pig and comes out of Pig. Pig provides a set of built-in load/store…

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Posted in: Data Analytics, Pig, pig latin Filed under: pig latin, pig script

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