Re: 16-bit page checksums for 9.2
От | Simon Riggs |
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Тема | Re: 16-bit page checksums for 9.2 |
Дата | |
Msg-id | CA+U5nMK9xVMb69UPnseQ5pjnUuh85NW+daREFayjgZ8FXj1WUg@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: 16-bit page checksums for 9.2 (Stephen Frost <sfrost@snowman.net>) |
Ответы |
Re: 16-bit page checksums for 9.2
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Список | pgsql-hackers |
On Fri, Jan 6, 2012 at 1:10 AM, Stephen Frost <sfrost@snowman.net> wrote: > * Simon Riggs (simon@2ndQuadrant.com) wrote: >> I discover that non-all-zeroes holes are fairly common, just not very frequent. > > Curious, might be interesting to find out why. > >> That may or may not be a problem, but not something to be dealt with >> here and now. > > But I agree that it's not the job of this patch/effort. It sounds like > we have clear indication, however, that those areas, as they are not > necessairly all zeros, should be included in the checksum. Disagree. Full page writes ignore the hole, so its appropriate to do so here also. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
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