Just found this interesting presentation, Map-Reduce-Merge: Simpli?ed Relational Data Processing on Large Clusters by Hung-chih Yang, Ali Dasdan Ruey-Lung Hsiao, D. Stott Parker; as presented by Nate Rober (PDF) Excerpts: Extending MapReduce 1. Change to reduce phase 2. Merge phase 3. Additional user-de?nable operations a. partition selector b. processor c. merger d. con?gurable iterators Implementing […]