Add some debugging details to some of the elog(STOP) conditions for WAL. Standardize on %X/%X as the formatting for XLOG position display --- we had a couple of different formats before, and none of 'em were as useful as hex offsets IMHO.
Add some debugging details to some of the elog(STOP) conditions for WAL.
Standardize on %X/%X as the formatting for XLOG position display --- we
had a couple of different formats before, and none of 'em were as useful
as hex offsets IMHO.

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