basho/basho_docs — pull request #505 by ksauzz (2013-07-19 10:39:50+00:00)
Title: add upgrade note about rolling upgrade for Riak 1.4.

A Riak node that runs riak_control crashes during rolling upgrade from 1.3.2 to 1.4.0. So disabling riak_control is needed for rolling upgrade.
Please refine this description if needed.