> and with the internal usage of the program (I only started in 2008, but spoke to Jeff extensively about the history of MR as part of Google's early infra) whe

> and with the internal usage of the program (I only started in 2008, but spoke to Jeff extensively about the history of MR as part of Google's early infra) where the map function can be fed with recordio (list containers) or sstable (map containers). I worked on the MapReduce team for a while (coincidentally, around 2008), together with Marián Dvorský, who wrote up a great little history of this. I don't think it was ever made public, though. > As for the ripper, if you have any links to that (rather than internal google lore), I'd love to hear about it. Jeff described the early infrastructure as being very brittle. I believe it's all internal, unfortunately.