elasticsearch/elasticsearch — pull request #7922 by rjernst (2014-09-29 23:41:06+00:00)
Title: Add Upgrade API

I'm putting this up now to get early feedback. I am still working on testing, but the implementation is basically there. I've also attempted to add docs (and modify optimize docs as necessary).

This branch does the following:
* Add the new API at the rest layer, being backed by the optimize API with upgrade flag, and segments api to find upgrade status.
* Add `upgrade` flag to optimize API, and deprecate `force` flag (will remove in master)

closes #7884