Fix "Invalid XID in t_cmin" error in vacuum.
Fix "Invalid XID in t_cmin" error in vacuum.

zeroae/postgres-xl,edespino/gpdb,arcivanov/postgres-xl,ovr/postgres-xl,ashwinstar/gpdb,Postgres-XL/Postgres-XL,yuanzhao/gpdb,Chibin/gpdb,yuanzhao/gpdb,rubikloud/gpdb,foyzur/gpdb,edespino/gpdb,chrishajas/gpdb,ahachete/gpdb,ahachete/gpdb,ashwinstar/gpdb,0x0FFF/gpdb,tpostgres-projects/tPostgres,chrishajas/gpdb,foyzur/gpdb,edespino/gpdb,Chibin/gpdb,lintzc/gpdb,lisakowen/gpdb,yazun/postgres-xl,50wu/gpdb,snaga/postgres-xl,foyzur/gpdb,0x0FFF/gpdb,rubikloud/gpdb,chrishajas/gpdb,postmind-net/postgres-xl,royc1/gpdb,adam8157/gpdb,rvs/gpdb,Chibin/gpdb,Chibin/gpdb,pavanvd/postgres-xl,Postgres-XL/Postgres-XL,rubikloud/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,greenplum-db/gpdb,randomtask1155/gpdb,xinzweb/gpdb,adam8157/gpdb,rubikloud/gpdb,xuegang/gpdb,kaknikhil/gpdb,chrishajas/gpdb,rvs/gpdb,lintzc/gpdb,CraigHarris/gpdb,yuanzhao/gpdb,janebeckman/gpdb,Quikling/gpdb,royc1/gpdb,ahachete/gpdb,techdragon/Postgres-XL,rvs/gpdb,xinzweb/gpdb,kmjungersen/PostgresXL,atris/gpdb,ashwinstar/gpdb,lisakowen/gpdb,royc1/gpdb,greenplum-db/gpdb,zeroae/postgres-xl,janebeckman/gpdb,yazun/postgres-xl,chrishajas/gpdb,tangp3/gpdb,arcivanov/postgres-xl,50wu/gpdb,rvs/gpdb,janebeckman/gpdb,CraigHarris/gpdb,pavanvd/postgres-xl,cjcjameson/gpdb,0x0FFF/gpdb,yazun/postgres-xl,rvs/gpdb,arcivanov/postgres-xl,kaknikhil/gpdb,50wu/gpdb,randomtask1155/gpdb,adam8157/gpdb,zeroae/postgres-xl,royc1/gpdb,atris/gpdb,techdragon/Postgres-XL,yuanzhao/gpdb,adam8157/gpdb,adam8157/gpdb,rubikloud/gpdb,snaga/postgres-xl,jmcatamney/gpdb,postmind-net/postgres-xl,snaga/postgres-xl,kaknikhil/gpdb,jmcatamney/gpdb,yuanzhao/gpdb,lisakowen/gpdb,randomtask1155/gpdb,lpetrov-pivotal/gpdb,cjcjameson/gpdb,janebeckman/gpdb,cjcjameson/gpdb,ovr/postgres-xl,rvs/gpdb,adam8157/gpdb,xuegang/gpdb,xuegang/gpdb,cjcjameson/gpdb,royc1/gpdb,cjcjameson/gpdb,postmind-net/postgres-xl,ahachete/gpdb,kaknikhil/gpdb,greenplum-db/gpdb,kmjungersen/PostgresXL,kaknikhil/gpdb,lintzc/gpdb,tpostgres-projects/tPostgres,Chibin/gpdb,edespino/gpdb,tangp3/gpdb,pavanvd/postgres-xl,edespino/gpdb,lintzc/gpdb,kaknikhil/gpdb,lisakowen/gpdb,cjcjameson/gpdb,Quikling/gpdb,janebeckman/gpdb,oberstet/postgres-xl,greenplum-db/gpdb,techdragon/Postgres-XL,lintzc/gpdb,Chibin/gpdb,50wu/gpdb,ahachete/gpdb,kaknikhil/gpdb,foyzur/gpdb,tangp3/gpdb,oberstet/postgres-xl,Quikling/gpdb,atris/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,Chibin/gpdb,randomtask1155/gpdb,yuanzhao/gpdb,ovr/postgres-xl,tangp3/gpdb,CraigHarris/gpdb,CraigHarris/gpdb,tpostgres-projects/tPostgres,postmind-net/postgres-xl,rvs/gpdb,snaga/postgres-xl,janebeckman/gpdb,lisakowen/gpdb,Quikling/gpdb,Postgres-XL/Postgres-XL,xinzweb/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,tpostgres-projects/tPostgres,50wu/gpdb,adam8157/gpdb,rubikloud/gpdb,techdragon/Postgres-XL,yazun/postgres-xl,rvs/gpdb,zeroae/postgres-xl,yuanzhao/gpdb,foyzur/gpdb,zaksoup/gpdb,zaksoup/gpdb,CraigHarris/gpdb,zaksoup/gpdb,royc1/gpdb,Chibin/gpdb,kaknikhil/gpdb,arcivanov/postgres-xl,lintzc/gpdb,arcivanov/postgres-xl,royc1/gpdb,CraigHarris/gpdb,foyzur/gpdb,lintzc/gpdb,lpetrov-pivotal/gpdb,lpetrov-pivotal/gpdb,lintzc/gpdb,zaksoup/gpdb,chrishajas/gpdb,zaksoup/gpdb,ashwinstar/gpdb,ahachete/gpdb,rvs/gpdb,atris/gpdb,edespino/gpdb,ovr/postgres-xl,0x0FFF/gpdb,kmjungersen/PostgresXL,ashwinstar/gpdb,xuegang/gpdb,greenplum-db/gpdb,xuegang/gpdb,xinzweb/gpdb,rubikloud/gpdb,postmind-net/postgres-xl,zaksoup/gpdb,0x0FFF/gpdb,CraigHarris/gpdb,chrishajas/gpdb,randomtask1155/gpdb,xuegang/gpdb,Postgres-XL/Postgres-XL,Quikling/gpdb,CraigHarris/gpdb,atris/gpdb,zaksoup/gpdb,foyzur/gpdb,arcivanov/postgres-xl,rvs/gpdb,lpetrov-pivotal/gpdb,tangp3/gpdb,lpetrov-pivotal/gpdb,ahachete/gpdb,lisakowen/gpdb,chrishajas/gpdb,Postgres-XL/Postgres-XL,kmjungersen/PostgresXL,xuegang/gpdb,lpetrov-pivotal/gpdb,randomtask1155/gpdb,kaknikhil/gpdb,zaksoup/gpdb,Quikling/gpdb,oberstet/postgres-xl,yuanzhao/gpdb,lpetrov-pivotal/gpdb,janebeckman/gpdb,lisakowen/gpdb,Chibin/gpdb,yazun/postgres-xl,50wu/gpdb,0x0FFF/gpdb,royc1/gpdb,tangp3/gpdb,50wu/gpdb,ahachete/gpdb,pavanvd/postgres-xl,ovr/postgres-xl,50wu/gpdb,atris/gpdb,techdragon/Postgres-XL,xuegang/gpdb,jmcatamney/gpdb,tangp3/gpdb,0x0FFF/gpdb,janebeckman/gpdb,adam8157/gpdb,CraigHarris/gpdb,tpostgres-projects/tPostgres,pavanvd/postgres-xl,Quikling/gpdb,janebeckman/gpdb,oberstet/postgres-xl,edespino/gpdb,yuanzhao/gpdb,cjcjameson/gpdb,Chibin/gpdb,randomtask1155/gpdb,cjcjameson/gpdb,edespino/gpdb,Quikling/gpdb,Quikling/gpdb,atris/gpdb,xinzweb/gpdb,lpetrov-pivotal/gpdb,Quikling/gpdb,0x0FFF/gpdb,xuegang/gpdb,kmjungersen/PostgresXL,greenplum-db/gpdb,foyzur/gpdb,atris/gpdb,xinzweb/gpdb,edespino/gpdb,rubikloud/gpdb,lintzc/gpdb,ashwinstar/gpdb,tangp3/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,xinzweb/gpdb,greenplum-db/gpdb,janebeckman/gpdb,lisakowen/gpdb,kaknikhil/gpdb,zeroae/postgres-xl,oberstet/postgres-xl,yuanzhao/gpdb,edespino/gpdb,jmcatamney/gpdb,snaga/postgres-xl,xinzweb/gpdb,randomtask1155/gpdb