| From: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
|---|---|
| To: | Boszormenyi Zoltan <zb(at)cybertec(dot)at> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, Hans-Jürgen Schönig <postgres(at)cybertec(dot)at>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers Hackers <pgsql-hackers(at)postgresql(dot)org>, Josh Berkus <josh(at)agliodbs(dot)com> |
| Subject: | Re: plan time of MASSIVE partitioning ... |
| Date: | 2010-10-27 15:41:00 |
| Message-ID: | 4CC8480C.409@enterprisedb.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 26.10.2010 18:34, Boszormenyi Zoltan wrote:
> thank you very much for pointing me to dynahash, here is the
> next version that finally seems to work.
>
> Two patches are attached, the first is the absolute minimum for
> making it work, this still has the Tree type for canon_pathkeys
> and eq_classes got the same treatment as join_rel_list/join_rel_hash
> has in the current sources: if the list grows larger than 32, a hash table
> is created. It seems to be be enough for doing in for
> get_eclass_for_sort_expr()
> only, the other users of eq_classes aren't bothered by this change.
That's better, but can't you use dynahash for canon_pathkeys as well?
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
| From | Date | Subject | |
|---|---|---|---|
| Next Message | David E. Wheeler | 2010-10-27 16:19:51 | Re: add label to enum syntax |
| Previous Message | Aidan Van Dyk | 2010-10-27 15:16:03 | Bikeshedding on enum vocabulary |