On Mon, Aug 3, 2015 at 12:03 AM, 高增琦 wrote:
> sorry for asking this really old commit.
>
> http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=7ab9b2f3b79177e501a1ef90ed004cc68788abaf
>
> I could not understand why "releases the lock on the buffer" is
> a problem since vacuum will lo
Hi,
sorry for asking this really old commit.
http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=7ab9b2f3b79177e501a1ef90ed004cc68788abaf
I could not understand why "releases the lock on the buffer" is
a problem since vacuum will lock and check the page bit again before
set the vm.
I discovered when researching the issue of index-only scans and Hot
Standby that there's a bug (for which I'm responsible) in
lazy_scan_heap[1]. Actually, the code has been like this for a long
time, but I needed to change it when I did the crash-safe visibility
map work, and I didn't. The proble
