土法炼钢 · 系统与基础设施

【数据湖与开放表格式】行级删除与 Merge-on-Read

2026-06-30 | database · storage | #iceberg #merge-on-read #copy-on-write #deletion-vector #position-delete #equality-delete #puffin #table-format

Iceberg 在不可变文件上做行级删除的两条路线：copy-on-write（重写整文件）与 merge-on-read（写 delete 文件，读时合并）。讲清 position delete 与 equality delete 的语义、字段与作用域规则，写放大/读放大的取舍，V2 delete file 到 V…