From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Oleg Bartunov <oleg(at)sai(dot)msu(dot)su>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Plans for solving the VACUUM problem |
Date: | 2001-05-18 18:35:20 |
Message-ID: | 200105181835.f4IIZK809193@candle.pha.pa.us |
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Lists: | pgsql-hackers |
> Oleg Bartunov <oleg(at)sai(dot)msu(dot)su> writes:
> > On Thu, 17 May 2001, Tom Lane wrote:
> >> We will also want to look at upgrading the non-btree index types to allow
> >> concurrent operations.
>
> > am I right you plan to work with GiST indexes as well ?
> > We read a paper "Concurrency and Recovery in Generalized Search Trees"
> > by Marcel Kornacker, C. Mohan, Joseph Hellerstein
> > (http://citeseer.nj.nec.com/kornacker97concurrency.html)
> > and probably we could go in this direction. Right now we're working
> > on adding of multi-key support to GiST.
>
> Yes, GIST should be upgraded to do concurrency. But I have no objection
> if you want to work on multi-key support first.
>
> My feeling is that a few releases from now we will have btree and GIST
> as the preferred/well-supported index types. Hash and rtree might go
> away altogether --- AFAICS they don't do anything that's not done as
> well or better by btree or GIST, so what's the point of maintaining
> them?
We clearly have too many index types, and we are actively telling people
not to use hash. And Oleg, don't you have a better version of GIST rtree
than our native rtree?
I certainly like streamlining our stuff.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
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