This is somewhat the continuation of my thread "Writing Out List<String>."
Right now, the only way to do sorting is with the Top class. This works well, but has the constraint of fitting in memory. A common batch use case is to take a large file and sort it. For example, this would be sorting a large report (several GB) file by timestamp. As of right now, this isn't built into Beam. I think it should be. I'll hold out Crunch's Sort <https://crunch.apache.org/apidocs/0.11.0/org/apache/crunch/lib/Sort.html> class as an example of what this class could look like. Thanks, Jesse
