On Wed, Jul 10, 2019 at 06:28:42PM -0400, Alvaro Herrera wrote: > On 2019-Jul-10, Joe Conway wrote: > > > On 7/10/19 3:53 PM, Alvaro Herrera wrote: > > > > (I do think you can have multiple writes of the same page with > > > different LSNs, if you change hint bits and don't write WAL about it, > > > > Do you mean "multiple writes of the same page without..."? > > Right, "twice the same page with the same LSN" is what I was thinking, > which is basically the question Tomas asked afterwards.
Just to clarify, the case being discussed above is where we modify a page with a new row, write the page with an LSN, then change a hint bit on the page, and, if log_hint_bits is false, write the page with the hint bit change without changing the LSN since we didn't log hint bits. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + As you are, so once was I. As I am, so you will be. + + Ancient Roman grave inscription +
