Minor performance improvement in MultiRecordFreeSpace.
Minor performance improvement in MultiRecordFreeSpace.

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