clarify that r_f does not apply to NTS
clarify that r_f does not apply to NTS

git-svn-id: 97f024e056bb8360c163ac9719c09bffda44c4d2@1066516 13f79535-47bb-0310-9956-ffa450edef68

macintoshio/cassandra,thobbs/cassandra,bdeggleston/cassandra,thobbs/cassandra,sbtourist/cassandra,josh-mckenzie/cassandra,vramaswamy456/cassandra,leomrocha/cassandra,boneill42/cassandra,pthomaid/cassandra,jeffjirsa/cassandra,Instagram/cassandra,rogerchina/cassandra,instaclustr/cassandra,aweisberg/cassandra,scylladb/scylla-tools-java,Instagram/cassandra,jeromatron/cassandra,Stratio/stratio-cassandra,yangzhe1991/cassandra,jasobrown/cassandra,fengshao0907/cassandra-1,qinjin/mdtc-cassandra,snazy/cassandra,mike-tr-adamson/cassandra,a-buck/cassandra,adejanovski/cassandra,pallavi510/cassandra,knifewine/cassandra,thobbs/cassandra,jkni/cassandra,RyanMagnusson/cassandra,tommystendahl/cassandra,heiko-braun/cassandra,ejankan/cassandra,snazy/cassandra,GabrielNicolasAvellaneda/cassandra,guanxi55nba/db-improvement,sivikt/cassandra,jeffjirsa/cassandra,christian-esken/cassandra,pcn/cassandra-1,tjake/cassandra,sedulam/CASSANDRA-12201,mheffner/cassandra-1,nlalevee/cassandra,sluk3r/cassandra,Jollyplum/cassandra,nlalevee/cassandra,pallavi510/cassandra,pauloricardomg/cassandra,carlyeks/cassandra,jkni/cassandra,rdio/cassandra,newrelic-forks/cassandra,instaclustr/cassandra,driftx/cassandra,phact/cassandra,Instagram/cassandra,tommystendahl/cassandra,nvoron23/cassandra,thelastpickle/cassandra,DavidHerzogTU-Berlin/cassandra,jasonstack/cassandra,a-buck/cassandra,likaiwalkman/cassandra,RyanMagnusson/cassandra,scylladb/scylla-tools-java,joesiewert/cassandra,DikangGu/cassandra,blambov/cassandra,HidemotoNakada/cassandra-udf,regispl/cassandra,RyanMagnusson/cassandra,juiceblender/cassandra,Stratio/stratio-cassandra,tjake/cassandra,shawnkumar/cstargraph,blerer/cassandra,caidongyun/cassandra,miguel0afd/cassandra-cqlMod,matthewtt/cassandra_read,clohfink/cassandra,pbailis/cassandra-pbs,dongjiaqiang/cassandra,cooldoger/cassandra,chbatey/cassandra-1,regispl/cassandra,DICL/cassandra,Stratio/cassandra,macintoshio/cassandra,strapdata/cassandra,Stratio/cassandra,jrwest/cassandra,dongjiaqiang/cassandra,bcoverston/cassandra,WorksApplications/cassandra,kgreav/cassandra,likaiwalkman/cassandra,jbellis/cassandra,mgmuscari/cassandra-cdh4,Jaumo/cassandra,bmel/cassandra,pcn/cassandra-1,cooldoger/cassandra,fengshao0907/cassandra-1,taigetco/cassandra_read,jasobrown/cassandra,mkjellman/cassandra,gdusbabek/cassandra,GabrielNicolasAvellaneda/cassandra,adelapena/cassandra,yonglehou/cassandra,ptnapoleon/cassandra,yhnishi/cassandra,sayanh/ViewMaintenanceCassandra,bdeggleston/cassandra,nakomis/cassandra,spodkowinski/cassandra,regispl/cassandra,bdeggleston/cassandra,mt0803/cassandra,DICL/cassandra,nvoron23/cassandra,aureagle/cassandra,qinjin/mdtc-cassandra,caidongyun/cassandra,driftx/cassandra,pbailis/cassandra-pbs,guanxi55nba/db-improvement,asias/cassandra,nlalevee/cassandra,jasonwee/cassandra,michaelmior/cassandra,newrelic-forks/cassandra,bcoverston/apache-hosted-cassandra,carlyeks/cassandra,taigetco/cassandra_read,mklew/mmp,szhou1234/cassandra,ibmsoe/cassandra,helena/cassandra,emolsson/cassandra,project-zerus/cassandra,bpupadhyaya/cassandra,xiongzheng/Cassandra-Research,sivikt/cassandra,boneill42/cassandra,ifesdjeen/cassandra,jsanda/cassandra,yhnishi/cassandra,jeromatron/cassandra,mike-tr-adamson/cassandra,DikangGu/cassandra,belliottsmith/cassandra,szhou1234/cassandra,hhorii/cassandra,jasonwee/cassandra,sbtourist/cassandra,bpupadhyaya/cassandra,yonglehou/cassandra,darach/cassandra,tjake/cassandra,adelapena/cassandra,driftx/cassandra,blerer/cassandra,lalithsuresh/cassandra-c3,rdio/cassandra,apache/cassandra,ejankan/cassandra,snazy/cassandra,xiongzheng/Cassandra-Research,mambocab/cassandra,pofallon/cassandra,krummas/cassandra,stef1927/cassandra,sluk3r/cassandra,clohfink/cassandra,iburmistrov/Cassandra,apache/cassandra,chbatey/cassandra-1,gdusbabek/cassandra,aarushi12002/cassandra,strapdata/cassandra,mshuler/cassandra,DavidHerzogTU-Berlin/cassandraToRun,yukim/cassandra,michaelsembwever/cassandra,clohfink/cassandra,Imran-C/cassandra,bcoverston/apache-hosted-cassandra,jbellis/cassandra,codefollower/Cassandra-Research,LatencyUtils/cassandra-stress2,swps/cassandra,beobal/cassandra,gdusbabek/cassandra,whitepages/cassandra,tongjixianing/projects,iamaleksey/cassandra,mshuler/cassandra,Imran-C/cassandra,mgmuscari/cassandra-cdh4,spodkowinski/cassandra,Instagram/cassandra,ptuckey/cassandra,christian-esken/cassandra,aarushi12002/cassandra,jsanda/cassandra,asias/cassandra,ibmsoe/cassandra,kangkot/stratio-cassandra,blerer/cassandra,shookari/cassandra,sluk3r/cassandra,scylladb/scylla-tools-java,nvoron23/cassandra,sbtourist/cassandra,stef1927/cassandra,segfault/apache_cassandra,ifesdjeen/cassandra,adejanovski/cassandra,adejanovski/cassandra,rmarchei/cassandra,shookari/cassandra,stef1927/cassandra,heiko-braun/cassandra,pthomaid/cassandra,belliottsmith/cassandra,mashuai/Cassandra-Research,chaordic/cassandra,jasobrown/cassandra,dprguiuc/Cassandra-Wasef,sriki77/cassandra,bmel/cassandra,blambov/cassandra,kangkot/stratio-cassandra,guard163/cassandra,guanxi55nba/key-value-store,scaledata/cassandra,fengshao0907/Cassandra-Research,szhou1234/cassandra,mkjellman/cassandra,newrelic-forks/cassandra,rackerlabs/cloudmetrics-cassandra,likaiwalkman/cassandra,michaelmior/cassandra,apache/cassandra,LatencyUtils/cassandra-stress2,phact/cassandra,caidongyun/cassandra,rackerlabs/cloudmetrics-cassandra,stef1927/cassandra,JeremiahDJordan/cassandra,juiceblender/cassandra,mt0803/cassandra,EnigmaCurry/cassandra,bcoverston/cassandra,sivikt/cassandra,beobal/cassandra,yukim/cassandra,nitsanw/cassandra,driftx/cassandra,bcoverston/apache-hosted-cassandra,jasonstack/cassandra,bcoverston/cassandra,dkua/cassandra,macintoshio/cassandra,GabrielNicolasAvellaneda/cassandra,shawnkumar/cstargraph,blambov/cassandra,weideng1/cassandra,juiceblender/cassandra,jeffjirsa/cassandra,bcoverston/cassandra,aboudreault/cassandra,chaordic/cassandra,MasahikoSawada/cassandra,Jaumo/cassandra,pthomaid/cassandra,ifesdjeen/cassandra,pkdevbox/cassandra,darach/cassandra,WorksApplications/cassandra,darach/cassandra,mashuai/Cassandra-Research,christian-esken/cassandra,Bj0rnen/cassandra,hengxin/cassandra,vaibhi9/cassandra,dprguiuc/Cassandra-Wasef,Jollyplum/cassandra,blerer/cassandra,lalithsuresh/cassandra-c3,Stratio/stratio-cassandra,aweisberg/cassandra,yonglehou/cassandra,krummas/cassandra,ptnapoleon/cassandra,taigetco/cassandra_read,HidemotoNakada/cassandra-udf,iamaleksey/cassandra,miguel0afd/cassandra-cqlMod,qinjin/mdtc-cassandra,tongjixianing/projects,ptuckey/cassandra,helena/cassandra,mambocab/cassandra,mkjellman/cassandra,sharvanath/cassandra,jasonwee/cassandra,vaibhi9/cassandra,adelapena/cassandra,rogerchina/cassandra,shawnkumar/cstargraph,jrwest/cassandra,pkdevbox/cassandra,ollie314/cassandra,guard163/cassandra,Jollyplum/cassandra,leomrocha/cassandra,matthewtt/cassandra_read,whitepages/cassandra,AtwooTM/cassandra,modempachev4/kassandra,aweisberg/cassandra,Bj0rnen/cassandra,rmarchei/cassandra,mheffner/cassandra-1,scaledata/cassandra,nitsanw/cassandra,yukim/cassandra,guard163/cassandra,jrwest/cassandra,knifewine/cassandra,mike-tr-adamson/cassandra,hhorii/cassandra,Stratio/stratio-cassandra,ben-manes/cassandra,DavidHerzogTU-Berlin/cassandra,Stratio/stratio-cassandra,yukim/cassandra,jsanda/cassandra,ben-manes/cassandra,swps/cassandra,kgreav/cassandra,pofallon/cassandra,vramaswamy456/cassandra,yanbit/cassandra,guanxi55nba/key-value-store,DavidHerzogTU-Berlin/cassandra,josh-mckenzie/cassandra,emolsson/cassandra,pallavi510/cassandra,hengxin/cassandra,kangkot/stratio-cassandra,ollie314/cassandra,segfault/apache_cassandra,bmel/cassandra,ibmsoe/cassandra,JeremiahDJordan/cassandra,WorksApplications/cassandra,miguel0afd/cassandra-cqlMod,guanxi55nba/key-value-store,dprguiuc/Cassandra-Wasef,project-zerus/cassandra,aboudreault/cassandra,sriki77/cassandra,pauloricardomg/cassandra,pauloricardomg/cassandra,mheffner/cassandra-1,sayanh/ViewMaintenanceSupport,ben-manes/cassandra,EnigmaCurry/cassandra,rmarchei/cassandra,yanbit/cassandra,vaibhi9/cassandra,pcn/cassandra-1,tommystendahl/cassandra,spodkowinski/cassandra,iamaleksey/cassandra,nutbunnies/cassandra,ptuckey/cassandra,yanbit/cassandra,krummas/cassandra,JeremiahDJordan/cassandra,mike-tr-adamson/cassandra,vramaswamy456/cassandra,joesiewert/cassandra,Bj0rnen/cassandra,sriki77/cassandra,jasobrown/cassandra,juiceblender/cassandra,WorksApplications/cassandra,pcmanus/cassandra,pofallon/cassandra,rackerlabs/cloudmetrics-cassandra,mklew/mmp,chaordic/cassandra,thelastpickle/cassandra,ifesdjeen/cassandra,AtwooTM/cassandra,kangkot/stratio-cassandra,aureagle/cassandra,scaledata/cassandra,pkdevbox/cassandra,leomrocha/cassandra,scylladb/scylla-tools-java,pbailis/cassandra-pbs,sedulam/CASSANDRA-12201,AtwooTM/cassandra,guanxi55nba/db-improvement,sayanh/ViewMaintenanceSupport,rogerchina/cassandra,strapdata/cassandra,clohfink/cassandra,emolsson/cassandra,chbatey/cassandra-1,sedulam/CASSANDRA-12201,DikangGu/cassandra,sayanh/ViewMaintenanceCassandra,mshuler/cassandra,jasonstack/cassandra,belliottsmith/cassandra,blambov/cassandra,thelastpickle/cassandra,weipinghe/cassandra,exoscale/cassandra,MasahikoSawada/cassandra,cooldoger/cassandra,strapdata/cassandra,michaelsembwever/cassandra,codefollower/Cassandra-Research,codefollower/Cassandra-Research,tommystendahl/cassandra,cooldoger/cassandra,HidemotoNakada/cassandra-udf,dongjiaqiang/cassandra,jkni/cassandra,michaelmior/cassandra,mshuler/cassandra,kgreav/cassandra,aweisberg/cassandra,pcmanus/cassandra,wreda/cassandra,DavidHerzogTU-Berlin/cassandraToRun,bdeggleston/cassandra,matthewtt/cassandra_read,swps/cassandra,nitsanw/cassandra,whitepages/cassandra,josh-mckenzie/cassandra,ollie314/cassandra,fengshao0907/Cassandra-Research,fengshao0907/Cassandra-Research,EnigmaCurry/cassandra,MasahikoSawada/cassandra,pcmanus/cassandra,nutbunnies/cassandra,jeromatron/cassandra,asias/cassandra,pauloricardomg/cassandra,instaclustr/cassandra,xiongzheng/Cassandra-Research,project-zerus/cassandra,krummas/cassandra,weipinghe/cassandra,DavidHerzogTU-Berlin/cassandraToRun,segfault/apache_cassandra,exoscale/cassandra,DICL/cassandra,mkjellman/cassandra,mambocab/cassandra,dkua/cassandra,jrwest/cassandra,hengxin/cassandra,ptnapoleon/cassandra,aboudreault/cassandra,michaelsembwever/cassandra,thelastpickle/cassandra,tjake/cassandra,ejankan/cassandra,beobal/cassandra,iburmistrov/Cassandra,knifewine/cassandra,apache/cassandra,spodkowinski/cassandra,nakomis/cassandra,sayanh/ViewMaintenanceCassandra,heiko-braun/cassandra,joesiewert/cassandra,iamaleksey/cassandra,helena/cassandra,weipinghe/cassandra,yangzhe1991/cassandra,instaclustr/cassandra,modempachev4/kassandra,nutbunnies/cassandra,mt0803/cassandra,Stratio/cassandra,jbellis/cassandra,wreda/cassandra,fengshao0907/cassandra-1,belliottsmith/cassandra,bpupadhyaya/cassandra,nakomis/cassandra,josh-mckenzie/cassandra,dkua/cassandra,a-buck/cassandra,aarushi12002/cassandra,sharvanath/cassandra,weideng1/cassandra,phact/cassandra,Jaumo/cassandra,tongjixianing/projects,carlyeks/cassandra,mgmuscari/cassandra-cdh4,sharvanath/cassandra,weideng1/cassandra,rdio/cassandra,shookari/cassandra,michaelsembwever/cassandra,exoscale/cassandra,hhorii/cassandra,Imran-C/cassandra,lalithsuresh/cassandra-c3,mklew/mmp,adelapena/cassandra,kangkot/stratio-cassandra,boneill42/cassandra,szhou1234/cassandra,jeffjirsa/cassandra,aureagle/cassandra,wreda/cassandra,beobal/cassandra,modempachev4/kassandra,yangzhe1991/cassandra,snazy/cassandra,iburmistrov/Cassandra,kgreav/cassandra,yhnishi/cassandra,LatencyUtils/cassandra-stress2,mashuai/Cassandra-Research