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| author | Andrew Dunstan <andrew@dunslane.net> | 2018-04-10 18:21:03 -0400 |
|---|---|---|
| committer | Andrew Dunstan <andrew@dunslane.net> | 2018-04-10 18:21:03 -0400 |
| commit | 074251db6740a9abfbd922d13d39b27c4f338a20 (patch) | |
| tree | 071d11111c9dfd3719c06314efb5582b3caf0628 /src/backend/executor/nodeModifyTable.c | |
| parent | 31f1f0bb4fd642643994d35c35ecb5b929711a99 (diff) | |
| download | postgresql-074251db6740a9abfbd922d13d39b27c4f338a20.tar.gz postgresql-074251db6740a9abfbd922d13d39b27c4f338a20.zip | |
Adjustments to the btree fastpath optimization.
This optimization was introduced in commit 2b272734. The changes include
some additional comments and documentation, and also these more
substantive changes:
. ensure the optimization is only applied on the leaf node of a tree
whose root is on level 2 or more. It's of little value on small trees.
. Delay calling RelationSetTargetBlock() until after the critical
section of _bt_insertonpg
. ensure the optimization is also applied to unlogged tables.
Pavan Deolasee and Peter Geoghegan with some very light editing from me.
Discussion: https://postgr.es/m/CABOikdO8jhRarNC60nZLktZYhxt+TK8z_V97+Ny499YQdyAfug@mail.gmail.com
Diffstat (limited to 'src/backend/executor/nodeModifyTable.c')
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