| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Gregory Stark <stark(at)enterprisedb(dot)com>, josh(at)agliodbs(dot)com, pgsql-hackers(at)postgresql(dot)org, Gianni Ciolli <gianni(dot)ciolli(at)2ndquadrant(dot)it>, Gabriele Bartolini <gabriele(dot)bartolini(at)2ndquadrant(dot)it> |
| Subject: | Re: Bitmap Indexes: request for feedback |
| Date: | 2008-10-22 12:43:52 |
| Message-ID: | 1224679432.27145.269.camel@ebony.2ndQuadrant |
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| Lists: | pgsql-hackers |
On Wed, 2008-10-22 at 08:31 -0400, Tom Lane wrote:
> Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> > On Wed, 2008-10-22 at 00:00 +0100, Gregory Stark wrote:
> >> When we last left our heros they were proposing ways to refactor the index api
> >> to allow index ams to stream results to the executor in bitmap form.
>
> > The indexAM API has now been changed, so that is a simple matter now.
>
> No, that was merely one component of the problem. The APIs for
> tidbitmaps need revision too. You can't "stream" a bitmap yet.
Please explain further.
Which calls? Why do we need to stream them?
--
Simon Riggs www.2ndQuadrant.com
PostgreSQL Training, Services and Support
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