RE: Re: Loading optimization
От | Mikheev, Vadim |
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Тема | RE: Re: Loading optimization |
Дата | |
Msg-id | 8F4C99C66D04D4118F580090272A7A234D3268@sectorbase1.sectorbase.com обсуждение исходный текст |
Ответ на | Loading optimization (Gary Wesley <gary@db.stanford.edu>) |
Ответы |
Re: Re: Loading optimization
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Список | pgsql-general |
> This is OK for table files, unless someone's broken the code that will > auto-initialize a zero page when it comes across one. Hmmm, I don't see anything like auto-initialization in code -:( Where did you put these changes? > I had a note to myself saying that zeroed pages in indexes may not be > OK, but I'm not sure if that's really a risk or not. btree, at least, > never does any linear scans of an index file; it can only visit pages > that are linked to by parent or sibling links. If we are careful that > we init a btree page before we modify its sibling(s) and parent, we > should be OK. Should be covered by WALoging of newroot & split ops which only add new pages. Vadim
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