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Hadoop in Action
book

Hadoop in Action

by Chuck Lam
November 2010
Intermediate to advanced
336 pages
11h 16m
English
Manning Publications
Content preview from Hadoop in Action

Chapter 10. Programming with Pig

This chapter covers

  • Installing Pig and using the Grunt shell
  • Understanding the Pig Latin language
  • Extending the Pig Latin language with user-defined functions
  • Computing similar documents efficiently, using a simple Pig Latin script

One frequent complaint about MapReduce is that it’s difficult to program. When you first think through a data processing task, you may think about it in terms of data flow operations, such as loops and filters. However, as you implement the program in MapReduce, you’ll have to think at the level of mapper and reducer functions and job chaining. Certain functions that are treated as first-class operations in higher-level languages become nontrivial to implement in MapReduce, as ...

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Publisher Resources

ISBN: 9781935182191Publisher SupportPublisher Website