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PostgreSQL 19 delayed to November as LLM-found bugs overwhelm committers

Robert HaasLLM-driven bug discovery has delayed PostgreSQL 19

1 Oct 30 · 12d ago · 1 post · 1 source · development 1 of 4

Haas, a PostgreSQL major contributor, published an analysis showing that language models have found so many bugs in PostgreSQL's codebase that the project cannot ship version 19 on its traditional October schedule. Between April and September 2026, back-patched commits to stable branches jumped 60–74% compared to 2025, and three major features were reverted late in beta due to quality concerns.

“The short answer is that LLMs happened. All software contains bugs… What's different now is that it's become vastly easier to find those bugs.”

Robert Haas

Robert Haas PostgreSQL major contributor, Databricks Sr. Staff Engineer

The whole story postscomments the bright band is this development · numbered dots are the others · click one to jump

Peak 20 pieces in 3h at Nov 2, 2 AM; 90 pieces over 12 days (1 article · 7 posts · 82 comments) Oct 30, 12 PM — 2 pieces · 1 article · 1 post — Hacker News 1, Newswires 1Oct 30, 3 PM — quietOct 30, 6 PM — quietOct 30, 9 PM — 2 pieces · 1 post · 1 comment — Hacker News 2Oct 31, 12 AM — quietOct 31, 3 AM — quietOct 31, 6 AM — quietOct 31, 9 AM — quietOct 31, 12 PM — quietOct 31, 3 PM — quietOct 31, 6 PM — quietOct 31, 9 PM — quietNov 1, 12 AM — quietNov 1, 2 AM — quietNov 1, 5 AM — quietNov 1, 8 AM — quietNov 1, 11 AM — quietNov 1, 2 PM — quietNov 1, 5 PM — 7 pieces · 1 post · 6 comments — Hacker News 6, Mastodon 1Nov 1, 8 PM — 14 pieces · 1 post · 13 comments — Hacker News 13, Lobsters 1Nov 1, 11 PM — 12 pieces · 2 posts · 10 comments — Hacker News 9, Mastodon 2, Lobsters 1Nov 2, 2 AM — 20 pieces · 1 post · 19 comments — Hacker News 18, Lobsters 2Nov 2, 5 AM — 10 pieces · 10 comments — Hacker News 5, Lobsters 5Nov 2, 8 AM — 8 pieces · 8 comments — Hacker News 5, Lobsters 3Nov 2, 11 AM — 6 pieces · 6 comments — Hacker News 3, Lobsters 3Nov 2, 2 PM — 2 pieces · 2 comments — Hacker News 1, Lobsters 1Nov 2, 5 PM — 3 pieces · 3 comments — Hacker News 2, Lobsters 1Nov 2, 8 PM — quietNov 2, 11 PM — 3 pieces · 3 comments — Lobsters 3Nov 3, 2 AM — 1 piece · 1 comment — Hacker News 1Nov 3, 5 AM — quietNov 3, 8 AM — quietNov 3, 11 AM — quietNov 3, 2 PM — quietNov 3, 5 PM — quietNov 3, 8 PM — quietNov 3, 11 PM — quietNov 4, 2 AM — quietNov 4, 5 AM — quietNov 4, 8 AM — quietNov 4, 11 AM — quietNov 4, 2 PM — quietNov 4, 5 PM — quietNov 4, 8 PM — quietNov 4, 11 PM — quietNov 5, 2 AM — quietNov 5, 5 AM — quietNov 5, 8 AM — quietNov 5, 11 AM — quietNov 5, 2 PM — quietNov 5, 5 PM — quietNov 5, 8 PM — quietNov 5, 11 PM — quietNov 6, 2 AM — quietNov 6, 5 AM — quietNov 6, 8 AM — quietNov 6, 11 AM — quietNov 6, 2 PM — quietNov 6, 5 PM — quietNov 6, 8 PM — quietNov 6, 11 PM — quietNov 7, 2 AM — quietNov 7, 5 AM — quietNov 7, 8 AM — quietNov 7, 11 AM — quietNov 7, 2 PM — quietNov 7, 5 PM — quietNov 7, 8 PM — quietNov 7, 11 PM — quietNov 8, 2 AM — quietNov 8, 5 AM — quietNov 8, 8 AM — quietNov 8, 11 AM — quietNov 8, 2 PM — quietNov 8, 5 PM — quietNov 8, 8 PM — quietNov 8, 11 PM — quietNov 9, 2 AM — quietNov 9, 5 AM — quietNov 9, 8 AM — quietNov 9, 11 AM — quietNov 9, 2 PM — quietNov 9, 5 PM — quietNov 9, 8 PM — quietNov 9, 11 PM — quietYesterday, 2 AM — quietYesterday, 5 AM — quietYesterday, 8 AM — quietYesterday, 11 AM — quietYesterday, 2 PM — quietYesterday, 5 PM — quietYesterday, 8 PM — quietYesterday, 11 PM — quietToday, 2 AM — quietToday, 5 AM — quietToday, 8 AM — quietToday, 11 AM — quietToday, 2 PM — quietToday, 5 PM — quietToday, 8 PM — quiet ◂ 1 earlier23–4
2Hacker News users debate whether bug…3–4Commenter frames delay as quality bar…
Oct 31Nov 1Nov 2Nov 3Nov 4Nov 5Nov 6Nov 7Nov 8Nov 9yesterdaynow · 9:14 PM ET

What was reported 1 claim about this development

  1. 1 outlet Haas: Postgres 19 is late, and it's AI's fault

    first by LWN, 12d ago

All 4 developments of PostgreSQL 19 delayed to November as LLM-found bugs… →

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