Sawzall (programming language)

Sawzall is an interpreted, procedural, domain-specific programming language, used specifically by Google, to handle huge quantities of data. MapReduce and Haskell are related powerful list processing functional programs.

Sawzall code

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[1]

External links

SAWZALL