optimizer cleanup
optimizer cleanup

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