Re: GIN needs tonic
От | Heikki Linnakangas |
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Тема | Re: GIN needs tonic |
Дата | |
Msg-id | 4AAFB92D.5010003@enterprisedb.com обсуждение исходный текст |
Ответ на | Re: GIN needs tonic (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: GIN needs tonic
|
Список | pgsql-bugs |
Tom Lane wrote: > Heikki Linnakangas <heikki.linnakangas@enterprisedb.com> writes: >> This means that the WAL replay of that record type has never been tested >> correctly :-(. Looking closer at writeListPage(), why does it always >> include 'workspace' in the WAL record, even if a full-page-image is >> taken? It's not used for anything the the redo function. That's >> harmless, but bloats the WAL record unnecessary. In fact it might be >> better to never do full-page writes for that record type, since it >> completely overwrites the page anyway. > > Actually, the entire thing is misdesigned from the get-go. AFAICS > it shouldn't even have its own WAL record type --- it should be using > log_newpage(). Yeah, that would be even simpler. The WAL records it currenctly writes are more compact, but then again it probably makes no difference in practice. -- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com
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