Document that the timestamp returned by pg_last_xact_replay_timestamp is the time on the primary that the transaction was generated.
Document that the timestamp returned by pg_last_xact_replay_timestamp is
the time on the primary that the transaction was generated.

arcivanov/postgres-xl,tpostgres-projects/tPostgres,jmcatamney/gpdb,tpostgres-projects/tPostgres,oberstet/postgres-xl,lisakowen/gpdb,kmjungersen/PostgresXL,ashwinstar/gpdb,snaga/postgres-xl,tpostgres-projects/tPostgres,adam8157/gpdb,ovr/postgres-xl,arcivanov/postgres-xl,zeroae/postgres-xl,jmcatamney/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,50wu/gpdb,Postgres-XL/Postgres-XL,Postgres-XL/Postgres-XL,greenplum-db/gpdb,postmind-net/postgres-xl,arcivanov/postgres-xl,50wu/gpdb,xinzweb/gpdb,zeroae/postgres-xl,pavanvd/postgres-xl,techdragon/Postgres-XL,lisakowen/gpdb,greenplum-db/gpdb,lisakowen/gpdb,kmjungersen/PostgresXL,50wu/gpdb,kmjungersen/PostgresXL,jmcatamney/gpdb,techdragon/Postgres-XL,lisakowen/gpdb,ashwinstar/gpdb,xinzweb/gpdb,postmind-net/postgres-xl,adam8157/gpdb,techdragon/Postgres-XL,Postgres-XL/Postgres-XL,greenplum-db/gpdb,oberstet/postgres-xl,ashwinstar/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,postmind-net/postgres-xl,pavanvd/postgres-xl,lisakowen/gpdb,tpostgres-projects/tPostgres,xinzweb/gpdb,greenplum-db/gpdb,Postgres-XL/Postgres-XL,zeroae/postgres-xl,yazun/postgres-xl,jmcatamney/gpdb,snaga/postgres-xl,adam8157/gpdb,adam8157/gpdb,adam8157/gpdb,kmjungersen/PostgresXL,jmcatamney/gpdb,ashwinstar/gpdb,arcivanov/postgres-xl,yazun/postgres-xl,snaga/postgres-xl,postmind-net/postgres-xl,adam8157/gpdb,yazun/postgres-xl,techdragon/Postgres-XL,arcivanov/postgres-xl,tpostgres-projects/tPostgres,lisakowen/gpdb,lisakowen/gpdb,xinzweb/gpdb,ovr/postgres-xl,zeroae/postgres-xl,greenplum-db/gpdb,greenplum-db/gpdb,xinzweb/gpdb,greenplum-db/gpdb,50wu/gpdb,50wu/gpdb,xinzweb/gpdb,xinzweb/gpdb,snaga/postgres-xl,lisakowen/gpdb,techdragon/Postgres-XL,Postgres-XL/Postgres-XL,jmcatamney/gpdb,oberstet/postgres-xl,arcivanov/postgres-xl,snaga/postgres-xl,ovr/postgres-xl,jmcatamney/gpdb,50wu/gpdb,zeroae/postgres-xl,yazun/postgres-xl,adam8157/gpdb,xinzweb/gpdb,adam8157/gpdb,pavanvd/postgres-xl,ashwinstar/gpdb,ovr/postgres-xl,pavanvd/postgres-xl,oberstet/postgres-xl,yazun/postgres-xl,oberstet/postgres-xl,jmcatamney/gpdb,postmind-net/postgres-xl,ovr/postgres-xl,kmjungersen/PostgresXL,50wu/gpdb,50wu/gpdb,pavanvd/postgres-xl