facebook/presto — pull request #2164 by nileema (2014-12-27 01:41:35+00:00)
Title: Allow Raptor files to be sorted on column(s)

* Add an interface in presto-main to sort a list of pages (this is marked as deprecated, we should identify a better way to expose this functionality)
* Plug it in the Raptor page sink, cache pages in Raptor, and sort them before writing to disk