| From: | Hitoshi Harada <umi(dot)tanuki(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Greg Stark <gsstark(at)mit(dot)edu>, pgsql-hackers(at)postgresql(dot)org, Chris Spotts <rfusca(at)gmail(dot)com> |
| Subject: | Re: Aggregate-function space leakage |
| Date: | 2009-07-24 07:09:29 |
| Message-ID: | e08cc0400907240009h1f3b44f9tbccbe765f22bb32c@mail.gmail.com |
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| Lists: | pgsql-hackers |
2009/7/24 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
> I think that WindowAgg does not need any changes because it already does
> MemoryContextResetAndDeleteChildren(winstate->wincontext) at partition
> boundaries. Hitoshi, do you agree?
>
I do. Looking closer, temporal space management of Agg is getting
similar to WindowAgg's partition localMemory strategy. We might be
able to get them one. Anyway, the choice sounds better now, though I
will test array_agg more.
Regards,
--
Hitoshi Harada
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