Update:
Update:

> * -Add pg_backend_pid() function to backend

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