Reduce num_tokens in zipfile cassandra.yaml
Reduce num_tokens in zipfile cassandra.yaml

num_tokens=256, the upstream default, results in Faunus firing off at
least 256 mappers for every job, even if it's just Graph of the Gods.

Reduced num_tokens to 4 in the cassandra.yaml file that ships in the
Titan distribution archives, added a comment recommending increasing
it in production deployments.  This file is only used by titan.sh and
by the embedded Cassandra adapter right now.

CYPP/titan,ThiagoGarciaAlves/titan,evanv/titan,nvoron23/titan,anuragkh/titan,amcp/titan,nvoron23/titan,dylanht/titan,kalatestimine/titan,samanalysis/titan,kalatestimine/titan,graben1437/titan,elkingtonmcb/titan,xlcupid/titan,samanalysis/titan,anuragkh/titan,samanalysis/titan,ThiagoGarciaAlves/titan,amcp/titan,dylanht/titan,nvoron23/titan,wangbf/titan,hortonworks/titan,jankotek/titan,tomersagi/titan,elkingtonmcb/titan,CYPP/titan,pluradj/titan,xlcupid/titan,thinkaurelius/titan,xlcupid/titan,englishtown/titan,CYPP/titan,graben1437/titan,kalatestimine/titan,amcp/titan,graben1437/titan,elkingtonmcb/titan,jankotek/titan,kangkot/titan,banjiewen/titan,tomersagi/titan,jankotek/titan,ThiagoGarciaAlves/titan,mbrukman/titan,nvoron23/titan,jankotek/titan,kangkot/titan,banjiewen/titan,jankotek/titan,jamestyack/titan,mwpnava/titan,dylanht/titan,evanv/titan,banjiewen/titan,elubow/titan,hortonworks/titan,kalatestimine/titan,elubow/titan,wangbf/titan,evanv/titan,elkingtonmcb/titan,elkingtonmcb/titan,fengshao0907/titan,kangkot/titan,hortonworks/titan,graben1437/titan,mbrukman/titan,mwpnava/titan,fengshao0907/titan,mbrukman/titan,qiuqiyuan/titan,wangbf/titan,evanv/titan,thinkaurelius/titan,jamestyack/titan,hortonworks/titan,pluradj/titan,mwpnava/titan,mbrukman/titan,samanalysis/titan,fengshao0907/titan,englishtown/titan,anuragkh/titan,englishtown/titan,mbrukman/titan,tomersagi/titan,CYPP/titan,anuragkh/titan,xlcupid/titan,jamestyack/titan,thinkaurelius/titan,anuragkh/titan,fengshao0907/titan,elubow/titan,qiuqiyuan/titan,mwpnava/titan,amcp/titan,jamestyack/titan,tomersagi/titan,pluradj/titan,ThiagoGarciaAlves/titan,evanv/titan,wangbf/titan,qiuqiyuan/titan,wangbf/titan,fengshao0907/titan,ThiagoGarciaAlves/titan,kalatestimine/titan,kangkot/titan,qiuqiyuan/titan,mwpnava/titan,jamestyack/titan,banjiewen/titan,hortonworks/titan,kangkot/titan,tomersagi/titan,thinkaurelius/titan,englishtown/titan,pluradj/titan,dylanht/titan,qiuqiyuan/titan,elubow/titan,xlcupid/titan