PostgreSQL 19 大规模回滚功能
推荐指数 45.0 NO. 014 · 2026.10.20
发布2026/10/19Score128Comments19
为什么值得看
PostgreSQL 19 在 beta 阶段异常回滚了 8-10 个重要功能，远超通常每周期约 1 个的水平。这暴露了大型开源数据库在功能合并流程上的系统性风险，对依赖 PG 新特性的团队有直接影响。
编辑判断
PG 这次集中回滚的深层问题是 commitfest 模式的疲劳累积。开发者为了赶版本窗口把半成品推进主干，测试资源又跟不上，导致 beta 变成真正的 QA 阶段。这和 Linux 内核的 merge window 机制形成对比，后者对进主干的代码质量门槛更严格。
对 AI 基础设施团队来说，这是个选型警示：如果你计划在 PG 19 上跑向量扩展或 AI 工作流负载，建议等至少 19.1 再迁移，不要赌 beta 转正的功能稳定性。
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核心争论：PG19大规模回滚是质量失控还是标准提升的积极信号
Reverts kind of suck when it's your feature getting reverted, no doubt. But for something as foundational as Postgres, the more reverts the better...
But why were they reverted? Did someone not understand what went in? Might someone have offloaded their thinking to some external tool? Did people stop caring? Did someone not plan or design a feature in full? Were the timelines unrealistic? Maybe with so many reverts timelines should be revised? I
Well I have a document for you to read on this very question!