| From: | Alexander Korotkov <aekorotkov(at)gmail(dot)com> |
|---|---|
| To: | Teodor Sigaev <teodor(at)sigaev(dot)ru> |
| Cc: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: GSoC 2011: Fast GiST index build |
| Date: | 2011-05-06 09:04:56 |
| Message-ID: | BANLkTinhC=2FtPeOpqEb7aW70MDfQ+tVwQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
2011/5/6 Teodor Sigaev <teodor(at)sigaev(dot)ru>
> As I understood it's because we can't move root to another page.
>>
>
> Actually not. Path to node could change completely, For example, for page
> on second level path is 0-234 (where 0 is a root page, 234 is a page on
> second level). After root split path will be 0-new_page-234.
>
> If algorithm could be able to change root then new path could be looked as
> new_root-new_page-234 because old root could be splitted to old_root_page
> and new_page.
Ok. Thank you for explanation.
----
With best regards,
Alexander Korotkov.
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