COPY FROM on large datasets: fixed problem on single core machines
COPY FROM on large datasets: fixed problem on single core machines

patch by Stefania Alborghetti; reviewed by Adam Holmberg for CASSANDRA-11053

joesiewert/cassandra,jasobrown/cassandra,weideng1/cassandra,nitsanw/cassandra,thelastpickle/cassandra,adelapena/cassandra,jbellis/cassandra,mshuler/cassandra,spodkowinski/cassandra,carlyeks/cassandra,blerer/cassandra,RyanMagnusson/cassandra,apache/cassandra,juiceblender/cassandra,hengxin/cassandra,hengxin/cassandra,jeffjirsa/cassandra,mkjellman/cassandra,weideng1/cassandra,mambocab/cassandra,szhou1234/cassandra,michaelsembwever/cassandra,strapdata/cassandra,snazy/cassandra,belliottsmith/cassandra,sharvanath/cassandra,tjake/cassandra,josh-mckenzie/cassandra,ifesdjeen/cassandra,aureagle/cassandra,Imran-C/cassandra,scylladb/scylla-tools-java,jasonwee/cassandra,strapdata/cassandra,ptnapoleon/cassandra,bcoverston/cassandra,scaledata/cassandra,szhou1234/cassandra,yhnishi/cassandra,ollie314/cassandra,jasonstack/cassandra,jeromatron/cassandra,pauloricardomg/cassandra,beobal/cassandra,bmel/cassandra,bcoverston/cassandra,chbatey/cassandra-1,christian-esken/cassandra,jeffjirsa/cassandra,strapdata/cassandra,cooldoger/cassandra,josh-mckenzie/cassandra,Jaumo/cassandra,ben-manes/cassandra,aureagle/cassandra,krummas/cassandra,tommystendahl/cassandra,stef1927/cassandra,DikangGu/cassandra,Instagram/cassandra,pthomaid/cassandra,scylladb/scylla-tools-java,Imran-C/cassandra,ollie314/cassandra,instaclustr/cassandra,jbellis/cassandra,yhnishi/cassandra,jeromatron/cassandra,mike-tr-adamson/cassandra,cooldoger/cassandra,krummas/cassandra,snazy/cassandra,exoscale/cassandra,jeffjirsa/cassandra,ptnapoleon/cassandra,scylladb/scylla-tools-java,ollie314/cassandra,vaibhi9/cassandra,modempachev4/kassandra,adejanovski/cassandra,aweisberg/cassandra,scaledata/cassandra,sedulam/CASSANDRA-12201,jbellis/cassandra,aboudreault/cassandra,WorksApplications/cassandra,mshuler/cassandra,spodkowinski/cassandra,instaclustr/cassandra,adelapena/cassandra,belliottsmith/cassandra,pauloricardomg/cassandra,DikangGu/cassandra,josh-mckenzie/cassandra,blambov/cassandra,yukim/cassandra,hhorii/cassandra,kgreav/cassandra,tommystendahl/cassandra,hengxin/cassandra,WorksApplications/cassandra,christian-esken/cassandra,josh-mckenzie/cassandra,tommystendahl/cassandra,chbatey/cassandra-1,spodkowinski/cassandra,jeromatron/cassandra,sharvanath/cassandra,jasobrown/cassandra,clohfink/cassandra,spodkowinski/cassandra,blambov/cassandra,hhorii/cassandra,jasonstack/cassandra,blerer/cassandra,juiceblender/cassandra,thelastpickle/cassandra,tommystendahl/cassandra,jrwest/cassandra,belliottsmith/cassandra,apache/cassandra,kgreav/cassandra,vaibhi9/cassandra,christian-esken/cassandra,exoscale/cassandra,mshuler/cassandra,ifesdjeen/cassandra,driftx/cassandra,jeffjirsa/cassandra,driftx/cassandra,bcoverston/cassandra,tjake/cassandra,iamaleksey/cassandra,beobal/cassandra,mkjellman/cassandra,cooldoger/cassandra,michaelsembwever/cassandra,jrwest/cassandra,kgreav/cassandra,jasobrown/cassandra,apache/cassandra,beobal/cassandra,jrwest/cassandra,aboudreault/cassandra,scaledata/cassandra,nitsanw/cassandra,yukim/cassandra,DikangGu/cassandra,szhou1234/cassandra,clohfink/cassandra,driftx/cassandra,aboudreault/cassandra,mkjellman/cassandra,adejanovski/cassandra,thobbs/cassandra,Instagram/cassandra,snazy/cassandra,weideng1/cassandra,Jollyplum/cassandra,pauloricardomg/cassandra,sedulam/CASSANDRA-12201,snazy/cassandra,juiceblender/cassandra,stef1927/cassandra,blerer/cassandra,clohfink/cassandra,blambov/cassandra,Instagram/cassandra,bdeggleston/cassandra,driftx/cassandra,bdeggleston/cassandra,iamaleksey/cassandra,jasobrown/cassandra,blerer/cassandra,mike-tr-adamson/cassandra,Jollyplum/cassandra,carlyeks/cassandra,thobbs/cassandra,krummas/cassandra,mike-tr-adamson/cassandra,iamaleksey/cassandra,bdeggleston/cassandra,WorksApplications/cassandra,mshuler/cassandra,tjake/cassandra,exoscale/cassandra,jasonstack/cassandra,Jollyplum/cassandra,adelapena/cassandra,instaclustr/cassandra,aweisberg/cassandra,ifesdjeen/cassandra,scylladb/scylla-tools-java,bcoverston/cassandra,strapdata/cassandra,michaelsembwever/cassandra,blambov/cassandra,adelapena/cassandra,bmel/cassandra,beobal/cassandra,sedulam/CASSANDRA-12201,ifesdjeen/cassandra,stef1927/cassandra,ptnapoleon/cassandra,modempachev4/kassandra,joesiewert/cassandra,aweisberg/cassandra,Jaumo/cassandra,RyanMagnusson/cassandra,jasonwee/cassandra,carlyeks/cassandra,pauloricardomg/cassandra,hhorii/cassandra,joesiewert/cassandra,szhou1234/cassandra,ben-manes/cassandra,thelastpickle/cassandra,yhnishi/cassandra,sharvanath/cassandra,Jaumo/cassandra,adejanovski/cassandra,mambocab/cassandra,bmel/cassandra,tjake/cassandra,RyanMagnusson/cassandra,michaelsembwever/cassandra,vaibhi9/cassandra,aureagle/cassandra,thelastpickle/cassandra,apache/cassandra,mkjellman/cassandra,clohfink/cassandra,cooldoger/cassandra,yukim/cassandra,mike-tr-adamson/cassandra,yukim/cassandra,stef1927/cassandra,mambocab/cassandra,Imran-C/cassandra,Instagram/cassandra,WorksApplications/cassandra,bdeggleston/cassandra,jasonwee/cassandra,kgreav/cassandra,chbatey/cassandra-1,iamaleksey/cassandra,jrwest/cassandra,pthomaid/cassandra,juiceblender/cassandra,nitsanw/cassandra,instaclustr/cassandra,aweisberg/cassandra,ben-manes/cassandra,belliottsmith/cassandra,krummas/cassandra,thobbs/cassandra,modempachev4/kassandra,pthomaid/cassandra