On Wed, Apr 3, 2019 at 10:03 PM Kyotaro HORIGUCHI
<horiguchi.kyotaro@lab.ntt.co.jp> wrote:
> > * Insert log record, using delete or insert instead of update log
> > * when only one of the two buffers needs WAL-logging. If this were a
> > * HOT-update, redoing the WAL record would result in a broken
> > * hot-chain. However, that never happens because updates complete on
> > * a single page always use log_update.
It makes sense grammatically, but I'm not sure I believe that it's
sound technically. Even though it's only used in the non-HOT case,
it's still important that the CTID, XMIN, and XMAX fields are set
correctly during both normal operation and recovery.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
