Re: Lossy Index Tuple Enhancement (LITE)
От | Simon Riggs |
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Тема | Re: Lossy Index Tuple Enhancement (LITE) |
Дата | |
Msg-id | CANP8+jKN4OLQ22RK6+98JkthOL5O+2fSOnCcDg8rJP5du0cJ3g@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: Lossy Index Tuple Enhancement (LITE) (Bruce Momjian <bruce@momjian.us>) |
Ответы |
Re: Lossy Index Tuple Enhancement (LITE)
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Список | pgsql-hackers |
On 4 August 2016 at 02:13, Bruce Momjian <bruce@momjian.us> wrote: > How do plan to clear the bitmask so it, over time, doesn't end up being > all-set? I don't have a plan, though thoughts welcome. Similar situation that our current indexes don't recover from bloat, a situation made worse by non-HOT updates. So, we have a choice of which disadvantage to accept. > Also, why not use this bitmap for all indexes, not just update chains? I don't understand where you get this update chains thing from. The bitmap can apply to multiple tuples on one page, which is described. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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