Hadoop PIG Part III


  • What is UDF (User Defined Function)? 
  • Steps for building and using UDF 
  • PiggyBank

User Defined Functions (UDF)

What is UDF? 

  • Pig provides extensive support for user defined functions (UDFs) as a way to specify custom processing 
  • UDF can be implemented in multiple languages
    • Java, Python, JavaScript, Ruby and Groovy 
  • You can customize all parts of the Pig processing including 
    • Data load/store 
    • Column transformation 
    • Aggregation

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