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The following page has been changed by FlipKromer: http://wiki.apache.org/pig/PigOverview The comment on the change is: Pointed to Run and Build pages (DRY) ------------------------------------------------------------------------------ * Additionally, users can incorporate their own custom code into essentially any Pig Latin operation. For example, if a user has a function that determines whether a given image contains a human face, the user can ask Pig to filter images according to this function. Pig will then evaluate this function on the user's behalf, over the images. If the evaluation mechanism incorporates parallelism, as is the case with the Hadoop evaluation mechanism, then the user's function will be executed in a parallel fashion. - == How to run Pig: == + == Before you start == + Make sure you [BuildPig] (or download it) and then [RunPig]. [RunPig] will help you check your configuration and run a silly little task. Then come back here to learn how to use pig. - You have three options: - * Interactive shell, called ''Grunt'' - * Script file - * Embed in a host language; currently we support Java as the host language (embedding Pig Latin in Java is very similar to JDBC) == Data formats and models: == @@ -113, +110 @@ * Do simple processing (e.g., count the number of images on the web) * ... or complex processing (e.g., count the number of images that contain faces). - + * It's especially right for you if you have access to a many-computer cluster already running hadoop. '''Pig is not right for you''' if you: * Need to retrieve individual records, or small ranges of records, from a very large data set (e.g., lookup Joe Smith's customer profile).
