Changed HyperLogLog hash seed to a non-zero value.
Changed HyperLogLog hash seed to a non-zero value.

Using a seed of zero has the side effect of having the empty string
hashing to what is a very special case in the context of HyperLogLog: a
very long run of zeroes.

This did not influenced the correctness of the result with 16k registers
because of the harmonic mean, but still it is inconvenient that a so
obvious value maps to a so special hash.

The seed 0xadc83b19 is used instead, which is the first 64 bits of the
SHA1 of the empty string.

Reference: issue #1657.

itamarhaber/redis,YuraLukashik/redis,timothyohare/3rdPartySrc-redis,CodeJuan/redis,flashbuckets/redis,PradheepShrinivasan/redis,Soledad89/redis,LongXQ/redis,seppo0010/redis,tellapart/redis,xlzhan/redis,soveran/redis,LongXQ/redis,charsyam/redis,ncopa/redis,hawkchch/redis,flashbuckets/redis,tjschuck/redis,seppo0010/redis,alenslan/redis,neomantra/redis,rouzier/redis,tanghaodong25/redis,xlzhan/redis,cusspvz/redis,jbochi/parallel_redis,mumingv/redis,fengshao0907/redis,wangyikai/redis,badboy/redis,tanghaodong25/redis,GrimDerp/redis,ctripcorp/redis,hedisdb/hedis,atreeyang/redis,saisai/redis,elkingtonmcb/redis,mumingv/redis,zguangyu/redis,huyuezheng/redis,StevenTsai/redis,OmarQunsul/graph-redis,tanghaodong25/redis,ipmobiletech/redis,MOON-CLJ/redis,citusdata/redis,mverrilli/redis,a-pavlov/redis,pmem/redis,nuxeh/redis,janekmi/redis,tellapart/redis,MasahikoSawada/redis,wangyikai/redis,linfangrong/redis,mgk/redis,gilala/bjredis,taoguan/redis,zczhuohuo/redis,programmecat/redis,j0hnma/hszredis,190235047/redis,j0hnma/szredis,tjschuck/redis,netroby/redis,aim-for-better/redis,cnbin/redis,tjschuck/redis,netroby/redis,gaoxianglong/redis,dreamquster/redis,simplestbest/redis,ipmobiletech/redis,NBSW/redis,qiyang0221/redis,colstrom/redis,badboy/redis,SummonY/redis,ErikDubbelboer/redis,zguangyu/redis,zczhuohuo/redis,atreeyang/redis,ytjiang/redis,mcanthony/redis,july2993/redis,LongXQ/redis,gilala/redis,AplayER/redis,jingjidejuren/redis,seppo0010/rlite-server,j0hnma/hszredis,gilala/hredis,seandsky/redis,Wangyao14cyy/redis,YuanZhewei/redis,supasate/redis,huyuezheng/redis,weizijun/redis,dreamquster/redis,ouyangkongtong/redis,simplestbest/redis,z-fork/redis,mcanthony/redis,JoeWoo/redis,honestme/redis,YuraLukashik/redis,valdsJohn/redis,z-fork/redis,dayuoba/redis,clamoriniere1A/redis,supasate/redis,pedigree/redis,aim-for-better/redis,modulexcite/redis,rogerchina/redis,devaos/redis,ofirluzon/redis,itugs/redis,gilala/hbjredis,taoguan/redis,csuhawk/redis,janekmi/redis,saisai/redis,itugs/redis,YuanZhewei/redis,MOON-CLJ/redis,zhcy/redis,hawkchch/redis,josiahcarlson/redis,pcarrier/redis,rogerlz/redis,dayuoba/redis,YuraLukashik/redis,gilala/hredis,PradheepShrinivasan/redis,mgk/redis,Aaron1992/redis,HeartSaVioR/redis,YuraLukashik/redis,seandsky/redis,Wangyao14cyy/redis,SummonY/redis,ctripcorp/redis,devaos/redis,Sciumo/redis,cusspvz/redis,jackyan/redis,xujunhai1991/redis,j0hnma/szredis,roth1002/redis,ouyangkongtong/redis,gilala/hbjredis,hedisdb/hedis,mingyaaaa/redis,tanghaodong25/redis,GrimDerp/redis,rogerchina/redis,flashbuckets/redis,universsky/redis,pkdevbox/redis,duanx/redis,mcanthony/redis,itamarhaber/redis,OmarQunsul/graph-redis,harrisonfeng/redis,duanx/redis,alenslan/redis,wbailey5/redis,ton31337/redis,RepmujNetsik/redis,ncopa/redis,healerkx/redis,pedigree/redis,xuguruogu/redis,rogerchina/redis,tjschuck/redis,wangyikai/redis,pkdevbox/redis,seppo0010/redis,YongMan/redis,GitHubMota/redis,programmecat/redis,4396/redis,SummonY/redis,takeshineshiro/redis,ituncle/redis,oranagra/redis,yossigo/redis,honestme/redis,jasonkying/redis,seppo0010/rlite-server,mengzhejin/RedisStudy,itugs/redis,alenslan/redis,190235047/redis,holstvoogd/redis,jackyan/redis,j0hnma/hszredis,arijitvt/redis,jingjidejuren/redis,MasahikoSawada/redis,shreesundara/redis,flashbuckets/redis,soloestoy/redis,hawkchch/redis,thomasdarimont/redis,honestme/redis,Aliceljm1/redis,duanx/redis,hgl888/redis,yuhc/redis-benchmark-enhanced,narma/redis,tellapart/redis,Wangyao14cyy/redis,mengzhejin/RedisStudy,xujunhai1991/redis,mattsta/redis,wprice/redis,charsyam/redis,allengaller/redis,AplayER/redis,kaushik94/redis,gilala/bjredis,yossigo/redis,blackmady/redis,izhoujie/redis,zhcy/redis,jackyan/redis,oranagra/redis,modulexcite/redis,GitHubMota/redis,shining-yang/redis,iandyh/redis,StevenTsai/redis,ErikDubbelboer/redis,hedisdb/hedis,CodeJuan/redis,csuhawk/redis,ituncle/redis,190235047/redis,clamoriniere1A/redis,wujf/redis,spinlock/redis,valdsJohn/redis,Markgorden/redis,takeshineshiro/redis,gilala/hredis,vincent-vivian-liu/redis,SyntaxStacks/redis,blackmady/redis,gaoxianglong/redis,charsyam/redis,ctripcorp/redis,cusspvz/redis,pedigree/redis,kaushik94/redis,nnog/redis,nuxeh/redis,qiyang0221/redis,xuguruogu/redis,seppo0010/rlite-server,oranagra/redis,sunheehnus/redis,gilala/redis,vincent-vivian-liu/redis,qiyang0221/redis,supasate/redis,alenslan/redis,harrisonfeng/redis,z-fork/redis,charsyam/redis,josiahcarlson/redis,fengshao0907/redis,citusdata/redis,nnog/redis,Aaron1992/redis,AALEKH/redis,ofirluzon/redis,z-fork/redis,jbochi/redis,devaos/redis,aim-for-better/redis,neomantra/redis,OmarQunsul/graph-redis,modulexcite/redis,MOON-CLJ/redis,gaoxianglong/redis,colstrom/redis,wenxueliu/redis_comment,xujunhai1991/redis,yossigo/redis,cusspvz/redis,ofirluzon/redis,timothyohare/3rdPartySrc-redis,Sciumo/redis,xuguruogu/redis,soveran/redis,rogerlz/redis,PKRoma/redis,fengshao0907/redis,itamarhaber/redis,devaos/redis,riyan8250/redis,valdsJohn/redis,RepmujNetsik/redis,Wangyao14cyy/redis,gilala/bjredis,pkdevbox/redis,ErikDubbelboer/redis,HeartSaVioR/redis,rogerlz/redis,vincent-vivian-liu/redis,healerkx/redis,cloudrain21/redis,PKRoma/redis,h0x91b/redis,wenxueliu/redis_comment,kaushik94/redis,july2993/redis,kmiku7/redis,CodeJuan/redis,taoguan/redis,ton31337/redis,a-pavlov/redis,iandyh/redis,JoeWoo/redis,twskipper/redis,seandsky/redis,MasahikoSawada/redis,allengaller/redis,pkdevbox/redis,cloudrain21/redis,sunheehnus/redis,cnbin/redis,wbailey5/redis,zczhuohuo/redis,4396/redis,weizijun/redis,seppo0010/rlite-server,saisai/redis,xuguruogu/redis,dayuoba/redis,huyuezheng/redis,OmarQunsul/graph-redis,AALEKH/redis,july2993/redis,HeartSaVioR/redis,allengaller/redis,josiahcarlson/redis,gilala/bjredis,hornen/redis,CodeJuan/redis,antirez/redis,programmecat/redis,rogerlz/redis,Aaron1992/redis,twskipper/redis,a-pavlov/redis,elkingtonmcb/redis,atreeyang/redis,weizijun/redis,xlzhan/redis,mumingv/redis,Sciumo/redis,sunheehnus/redis,izhoujie/redis,nnog/redis,pmem/redis,duanx/redis,davidradunz/redis,pmem/redis,jbochi/redis,roth1002/redis,gilala/hbjredis,zhiliaoniu/redis,zguangyu/redis,cloudrain21/redis,gaoxianglong/redis,antirez/redis,ofirluzon/redis,SyntaxStacks/redis,supasate/redis,nuxeh/redis,Aaron1992/redis,mengzhejin/RedisStudy,netroby/redis,janekmi/redis,jingjidejuren/redis,ytjiang/redis,josiahcarlson/redis,iandyh/redis,h0x91b/redis,zhiliaoniu/redis,linfangrong/redis,GrimDerp/redis,narma/redis,riyan8250/redis,PKRoma/redis,a-pavlov/redis,j0hnma/szredis,spinlock/redis,hornen/redis,takeshineshiro/redis,wprice/redis,j0hnma/hszredis,simplestbest/redis,simplestbest/redis,YuanZhewei/redis,elkingtonmcb/redis,kmiku7/redis,gilala/redis,MasahikoSawada/redis,ituncle/redis,kmiku7/redis,hgl888/redis,davidradunz/redis,healerkx/redis,mumingv/redis,soloestoy/redis,rouzier/redis,yossigo/redis,dreamquster/redis,190235047/redis,timothyohare/3rdPartySrc-redis,wbailey5/redis,hgl888/redis,antirez/redis,brg-liuwei/redis,kensou97/redis,guker/redis,spinlock/redis,citusdata/redis,linfangrong/redis,brg-liuwei/redis,itamarhaber/redis,rouzier/redis,rouzier/redis,izhoujie/redis,cnbin/redis,Markgorden/redis,PradheepShrinivasan/redis,j0hnma/szredis,gilala/redis,ouyangkongtong/redis,thomasdarimont/redis,badboy/redis,hornen/redis,hedisdb/hedis,wujf/redis,wprice/redis,h0x91b/redis,SyntaxStacks/redis,kensou97/redis,ituncle/redis,jbochi/redis,jingjidejuren/redis,narma/redis,blackmady/redis,atreeyang/redis,JoeWoo/redis,timothyohare/3rdPartySrc-redis,neomantra/redis,mcanthony/redis,zhiliaoniu/redis,shreesundara/redis,abhiklodh/redis,PKRoma/redis,allengaller/redis,francischan714/redis,guker/redis,mengyou0304/redis,iandyh/redis,ipmobiletech/redis,PKRoma/redis,soveran/redis,shining-yang/redis,wujf/redis,abhiklodh/redis,linfangrong/redis,Soledad89/redis,clamoriniere1A/redis,ouyangkongtong/redis,arijitvt/redis,StevenTsai/redis,hgl888/redis,GrimDerp/redis,NBSW/redis,h0x91b/redis,spinlock/redis,shining-yang/redis,Aliceljm1/redis,AALEKH/redis,pcarrier/redis,jackyan/redis,davidradunz/redis,roth1002/redis,mattsta/redis,yuhc/redis-benchmark-enhanced,seandsky/redis,harrisonfeng/redis,universsky/redis,mengyou0304/redis,kaushik94/redis,GitHubMota/redis,modulexcite/redis,cloudrain21/redis,ton31337/redis,shreesundara/redis,qiyang0221/redis,yuhc/redis-benchmark-enhanced,francischan714/redis,elkingtonmcb/redis,ipmobiletech/redis,Aliceljm1/redis,AplayER/redis,YongMan/redis,csuhawk/redis,pcarrier/redis,healerkx/redis,PradheepShrinivasan/redis,4396/redis,tellapart/redis,neomantra/redis,arijitvt/redis,holstvoogd/redis,kmiku7/redis,mengyou0304/redis,cnbin/redis,mattsta/redis,wbailey5/redis,kensou97/redis,netroby/redis,mengyou0304/redis,NBSW/redis,yuhc/redis-benchmark-enhanced,AplayER/redis,programmecat/redis,zhcy/redis,dreamquster/redis,blackmady/redis,jbochi/parallel_redis,charsyam/redis,thomasdarimont/redis,shreesundara/redis,soveran/redis,NBSW/redis,kensou97/redis,itugs/redis,jasonkying/redis,saisai/redis,AALEKH/redis,ytjiang/redis,wenxueliu/redis_comment,YuanZhewei/redis,jasonkying/redis,soloestoy/redis,csuhawk/redis,wprice/redis,oranagra/redis,izhoujie/redis,ytjiang/redis,nuxeh/redis,francischan714/redis,mingyaaaa/redis,wangyikai/redis,zhcy/redis,twskipper/redis,4396/redis,janekmi/redis,rogerchina/redis,shining-yang/redis,pmem/redis,oranagra/redis,weizijun/redis,zguangyu/redis,xlzhan/redis,taoguan/redis,pcarrier/redis,yossigo/redis,mgk/redis,YongMan/redis,Soledad89/redis,SyntaxStacks/redis,mingyaaaa/redis,zczhuohuo/redis,HeartSaVioR/redis,brg-liuwei/redis,july2993/redis,davidradunz/redis,RepmujNetsik/redis,abhiklodh/redis,abhiklodh/redis,Markgorden/redis,nnog/redis,SummonY/redis,dayuoba/redis,JoeWoo/redis,hawkchch/redis,valdsJohn/redis,mverrilli/redis,StevenTsai/redis,jbochi/parallel_redis,brg-liuwei/redis,ctripcorp/redis,ErikDubbelboer/redis,ncopa/redis,roth1002/redis,mengzhejin/RedisStudy,riyan8250/redis,takeshineshiro/redis,harrisonfeng/redis,Markgorden/redis,vincent-vivian-liu/redis,universsky/redis,honestme/redis,Soledad89/redis,wenxueliu/redis_comment,GitHubMota/redis,RepmujNetsik/redis,mingyaaaa/redis,gilala/hredis,guker/redis,neomantra/redis,colstrom/redis,aim-for-better/redis,wujf/redis,holstvoogd/redis,colstrom/redis,sunheehnus/redis,guker/redis,arijitvt/redis,clamoriniere1A/redis,mverrilli/redis,soloestoy/redis,francischan714/redis,riyan8250/redis,soloestoy/redis,Aliceljm1/redis,mverrilli/redis,jasonkying/redis,citusdata/redis,twskipper/redis,ncopa/redis,antirez/redis,hornen/redis,mgk/redis,thomasdarimont/redis,badboy/redis,Sciumo/redis,huyuezheng/redis,ofirluzon/redis,fengshao0907/redis,LongXQ/redis,universsky/redis,gilala/hbjredis,holstvoogd/redis,ton31337/redis,xujunhai1991/redis,seppo0010/redis,YongMan/redis,zhiliaoniu/redis,pedigree/redis