Sawzall (programming language)

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SAWZALL is

"not related to the portable reciprocating power saw trademark of the Milwaukee Electric Tool Corporation"

SAWZALL is an interpreted, procedural, ___domain-specific programming language, used specifically by Google, to handle huge quantities of data. MapReduce, Haskell are related powerful list processing functional programs. A discussion group exists at UCSC School of Engineering led by Cormac Flanagan.

SAWZALL code[1]

This complete Sawzall program will read the input and produce three results: the number of records, the sum of the values, and the sum of the squares of the values.

count: table sum of int;
total: table sum of float;
sum_of_squares: table sum of float;
x: float = input;
emit count <- 1;
emit total <- x;
emit sum_of_squares <- x * x;

External References

• S. Ghemawat, H. Gobioff, S.-T. Leung, The Google file system, in: 19th ACM Symposium on Operating Systems Principles, Proceedings,

17 ACM Press, 2003, pp. 29 – 43.

• MapReduce[2]