Krishna Sankar has a ☞ great summary of a recent talk of Google’s Jeff Dean on Google’s systems and infrastructure: An interesting set of statistics of MapReduce over time: MapReduce at Google, now at 4 million jobs; processing ~1000 PB with 130 PB intermediate data and 45 PB outputData has doubled while the number of machines have been constant from ‘07 to ‘10.Machine usage has quadrupled while t