| From: | Floris Van Nee <florisvannee(at)Optiver(dot)com> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Cc: | Andy Fan <zhihui(dot)fan1213(at)gmail(dot)com>, Jesper Pedersen <jesper(dot)pedersen(at)redhat(dot)com>, David Rowley <dgrowleyml(at)gmail(dot)com>, "Kyotaro Horiguchi" <horikyota(dot)ntt(at)gmail(dot)com>, Peter Geoghegan <pg(at)bowt(dot)ie>, "Thomas Munro" <thomas(dot)munro(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Dilip Kumar <dilipbalaut(at)gmail(dot)com> |
| Subject: | RE: Generic Index Skip Scan |
| Date: | 2020-07-22 21:38:39 |
| Message-ID: | a6f67638270d44f8a45f836ec2d7b4f8@opammb0561.comp.optiver.com |
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| Lists: | pgsql-hackers |
Attached v02, rebased on latest master. It uses the new nbtree lock/unlock functions by Peter and I've verified with Valgrind there's no cases where it's trying to access pages without holding the lock. Just for debugging, I ran the Valgrind session on a modified version of the patch that always favors a skip scan over a regular index scan, in order to greatly increase the Valgrind coverage of the new parts.
-Floris
| Attachment | Content-Type | Size |
|---|---|---|
| v9-0001-Introduce-RelOptInfo-notnullattrs-attribute.patch | application/octet-stream | 4.8 KB |
| v9-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-stru.patch | application/octet-stream | 58.6 KB |
| v02-0001-Extend-UniqueKeys.patch | application/octet-stream | 13.0 KB |
| v02-0002-Index-skip-scan.patch | application/octet-stream | 219.0 KB |
| v02-0003-Support-skip-scan-for-non-distinct-scans.patch | application/octet-stream | 18.7 KB |
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