Adjust CreateCheckpoint so that buffer dumping activities and cleanup of dead xlog segments are not considered part of a critical section.  It is not necessary to force a database-wide panic if we get a failure in these operations.  Per recent trouble reports.
Adjust CreateCheckpoint so that buffer dumping activities and cleanup of
dead xlog segments are not considered part of a critical section.  It is
not necessary to force a database-wide panic if we get a failure in these
operations.  Per recent trouble reports.

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