Decorrelate nested tuple hash tables

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ID 6553
Title Decorrelate nested tuple hash tables
CI (CFBot) Summary
Stats (from CFBot) Patch version: v2, Patch count: 1, First patch: +13−7, All patches: +13−7
Tags Performance
Created 2026-02-28 15:24:28
Last modified 2026-04-02 06:24:43 (4 hours ago)
Latest email 2026-03-01 17:19:38 (1 month ago)
Status
PG20-1 (2026-07-01 – 2026-07-31): Needs review
PG19-Final (2026-03-01 – 2026-04-09): Moved to different CF
Target version 19
Authors Ants Aasma (ants)
Reviewers Become reviewer
Committer
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Hash aggregate collisions cause excessive spilling
First at 2026-02-19 14:49:44 by Ants Aasma <ants.aasma at cybertec.at>
Latest at 2026-03-01 17:19:38 by Ants Aasma <ants.aasma at cybertec.at>
Latest attachment (v2-0001-Decorrelate-nested-hash-tables.patch) at 2026-03-01 17:19:38 from Ants Aasma <ants.aasma at cybertec.at>
    Attachment (v2-0001-Decorrelate-nested-hash-tables.patch) at 2026-03-01 17:19:38 from Ants Aasma <ants.aasma at cybertec.at> (Patch: Yes)
    Attachment (v1-0001-Decorrelate-nested-hash-tables.patch) at 2026-02-28 15:21:28 from Ants Aasma <ants.aasma at cybertec.at> (Patch: Yes)
History
When Who What
2026-04-02 06:24:43 Ants Aasma (ants) Moved from CF PG19-Final to CF PG20-1
2026-02-28 15:24:28 Ants Aasma (ants) Attached mail thread CANwKhkPOZupu3PYQVdkMmYjquYVqG2v8XmCAuuVM9Eu13-Zw3g@mail.gmail.com
2026-02-28 15:24:28 Ants Aasma (ants) Created patch record
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