basho/riak_kv — pull request #990 by andrewjstone (2014-06-17 17:53:08+00:00)
Title: Add riak_kv_ensemble_backend:handle_down/4

Have the backend monitor the vnode and vnode proxy. The peer will
receive 'DOWN' messages and call riak_kv_ensemble_backend:handle_down/4
as a result.

Part of a fix for basho/riak_kv#985