| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Gregory Stark <stark(at)enterprisedb(dot)com> |
| Cc: | 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 07:32:45 |
| Message-ID: | 1224660765.27145.188.camel@ebony.2ndQuadrant |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Wed, 2008-10-22 at 00:00 +0100, Gregory Stark wrote:
> Actually as I recall the immediate issue was that the patch was more complex
> than necessary. In particular it reimplemented parts of the executor
> internally rather than figuring out what api was necessary to integrate it
> fully into the executor.
>
> 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. That
> would allow a scan of a bitmap index to return bitmap elements wholesale and
> have the executor apply bitmap operations to them along with the elements
> returned by a btree bitmap scan or other index ams.
The indexAM API has now been changed, so that is a simple matter now.
amgetbitmap() was committed on 10 April 2008.
--
Simon Riggs www.2ndQuadrant.com
PostgreSQL Training, Services and Support
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Heikki Linnakangas | 2008-10-22 07:33:16 | Re: binary representation of datatypes |
| Previous Message | Matthieu Imbert | 2008-10-22 07:29:17 | Re: binary representation of datatypes |