Sawzall

Website: code.google.com/archive/p/szl/

Sawzall is a procedural domain-specific programming language, used by Google to process large numbers of individual log records.

Sawzall was first described in 2003, and the szl runtime was open-sourced in August 2010.

However, since the MapReduce table aggregators have not been released, the open-sourced runtime is not useful for large-scale data analysis of multiple log files off the shelf.

Sawzall has been replaced by Lingo (logs in Go) for most purposes within Google.