don't NPE shutting down, due to gossip failure
don't NPE shutting down, due to gossip failure

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