On 2016-07-13 23:06:07 -0700, Andres Freund wrote:
> won't enter the branch, because HEAP_XMAX_LOCK_ONLY won't be set. Which
> will leave t_ctid and HEAP_HOT_UPDATED set differently on the master and
> standby / after crash recovery. I'm failing to see any harmful
> consequences right now, but differences between master and standby are a bad
> thing.
I think it's actually critical, because HEAP_HOT_UPDATED /
HEAP_XMAX_LOCK_ONLY are used to terminate ctid chasing loops (like
heap_hot_search_buffer()).
Andres