Figure 2From: Hydra: a scalable proteomic search engine which utilizes the Hadoop distributed computing frameworkMapReduce jobs to score measured spectra. Spectra are scored against the contents of the peptide database with a series of m/z values. In the next job all scores are combined to generate the best scores. As a single file is the desired output, the last job has a single reducer allowing all output to go to a single file.Back to article page