enable mapred_2i_pipe by default on master (post-1.0)
enable mapred_2i_pipe by default on master (post-1.0)

DavidAlphaFox/riak,planobe/riak,glickbot/riak,planobe/riak,laurenrother/riak,authbox-lib/riak,biddyweb/riak,GabrielNicolasAvellaneda/riak,xuejianhai/riak,basho/riak,yangchengjian/riak,elkingtonmcb/riak,amyvmiwei/riak