I'm confused about the this function, CheckForSerializableConflictOut(...). Can anyone help me out?
It seems like this function is used to check the rw-antidependencies out edge. This should be done when reading a written tuple. But btree does not call this function at all. The heapam used predicatelockpage(...)...
I use to think the in and out edge will be built when rw-antidependencies detected. CheckForSerializableConflictIn(...) can do this job. So CheckForSerializableConflictOut(...) function really confused me.