Chapter 6. Developing and Testing Pig Latin Scripts
The last few chapters focused on Pig Latin the
language. Now we will turn to the practical matters of developing and testing
your scripts. This chapter covers helpful debugging tools such as describe and explain. It also covers ways to test your scripts.
Information on how to make your scripts perform better will be provided in
the next chapter.
Development Tools
Pig provides several tools and diagnostic operators to help you develop your applications. In this section we will explore these and also look at some tools others have written to make it easier to develop Pig with standard editors and integrated development environments (IDEs).
Syntax Highlighting and Checking
Syntax highlighting often helps users write code correctly, at least syntactically, the first time around. Syntax highlighting packages exist for several popular editors. The packages listed in Table 6-1 were created and added at various times, so how their highlighting conforms with current Pig Latin syntax varies.
| Tool | URL |
|---|---|
| Eclipse | https://github.com/eyala/pig-eclipse |
| Emacs | http://github.com/cloudera/piglatin-mode, http://sf.net/projects/pig-mode |
| TextMate | http://www.github.com/kevinweil/pig.tmbundle |
| Vim | http://www.vim.org/scripts/script.php?script_id=2186 |
In addition to these syntax highlighting
packages, Pig will also let you check the syntax of your script without
running it. If you add -c or -check to the command line, Pig will ...
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