Re: AW: update on TOAST status'
От | Bruce Momjian |
---|---|
Тема | Re: AW: update on TOAST status' |
Дата | |
Msg-id | 200007111449.KAA00581@candle.pha.pa.us обсуждение исходный текст |
Ответ на | AW: update on TOAST status' (Zeugswetter Andreas SB <ZeugswetterA@wien.spardat.at>) |
Список | pgsql-hackers |
[ Charset ISO-8859-1 unsupported, converting... ] > > > It appears that brtee indices (at least) can keep references > > to old toast values that survive a VACUUM! Seems these > > references live in nodes actually not referring to a heap > > tuple any more, but used during tree traversal in > > comparisions. As if an index tuple delete from a btree not > > necessarily causes the index value to disappear from the > > btree completely. It'll never be returned by an index scan, > > but the value is still there somewhere. > > Would it be possible to actually delete those entries during vacuum ? > I guess that would be an overall win, no ? Seems that is the only good solution, or somehow link vacuum of TOAST tables to index so these TOAST values are not removed. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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