Costing for parallel scans with few/single row produced in the outer side

Title

CI (CFBot)

Needs rebase! Needs rebase since 1 week. Failing since 1 week.
Additional links previous successfully applied patch (outdated):

Stats (from CFBot)

Unknown

Tags

Bugfix Performance

Created

2026-09-29 12:55:09

Last modified

2026-09-29 12:55:09 (2 weeks ago)

Latest email

2026-10-04 02:05:53 (2 weeks ago)

Status

PG20-3 (2026-11-01 – 2026-11-30): Needs review

Target version

Authors

Matthias van de Meent (mmeent)

Reviewers

Become reviewer

Committer

Links

Emails

Costing for parallel scans with few/single row produced in the outer side: First at 2026-09-28 22:06:23 by Matthias van de Meent <boekewurm at gmail.com>
Latest at 2026-10-04 02:05:53 by Haibo Yan <tristan.yim at gmail.com>
Latest attachment (v2-0001-optimizer-Improve-costing-for-low-rowcount-parall.patch) at 2026-10-02 21:10:10 from Matthias van de Meent <boekewurm at gmail.com>
Attachment (v2-0001-optimizer-Improve-costing-for-low-rowcount-parall.patch) at 2026-10-02 21:10:10 from Matthias van de Meent <boekewurm at gmail.com> (Patch: No)
Attachment (scratch_70.sql) at 2026-09-28 22:06:23 from Matthias van de Meent <boekewurm at gmail.com> (Patch: No)

History

When	Who	What
2026-10-08 11:24:33	CFbot	Patch needs rebase
2026-09-29 12:55:09	Matthias van de Meent (mmeent)	Attached mail thread CAEze2Wi+Jp26mhBJvrMshKGYNTtPcxzd1BWoEW_7+eH6saj3gQ@mail.gmail.com
2026-09-29 12:55:09	Matthias van de Meent (mmeent)	Created patch record