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Sawzall is a programming language designed for processing large volumes of data. It was created at Google to work with their MapReduce computational framework. Sawzall syntax resembles C++, and it includes support for file I/O, regular expressions, and other common programming constructs. It allows developers to easily write complex analysis code that operates on massive datasets in parallel across multiple machines (or nodes). In practice, it's been largely replaced by more efficient languages like Go or extensions to SQL within Google's internal systems.

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