On Wed, Apr 3, 2019 at 10:03 PM Kyotaro HORIGUCHI <horiguchi.kyot...@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
