Major Description
View gp_distributed_log depends on built-in function gp_distributed_log().
And gp_distributed_log() just return null. So the view can't work at all.
So do view gp_distributed_xacts.
e=# select * from gp_distributed_log; ERROR: function returning set of rows cannot return null value e=# select * from gp_distributed_xacts; ERROR: function returning set of rows cannot return null value
function gp_distributed_log is defined in gp_distributed_log.c :27
function gp_distributed_xacts is defined in cdbdistributedxacts.c:44