title: Read file line-by-line in Amazon S3?
body: <p>Is it possible to read a file line-by-line with Amazon S3?  I'm looking to let people upload large files somewhere, then have some code (probably running on Amazon) read their file line-by-line and do something with it, probably in a map-reduced multithreaded fashion.  Or maybe just being able to load 1000 lines at a time...  Any suggestions?</p>