Tag:Iceberg v4
Articles tagged "Iceberg v4".
- 20 MIN READ•Nov 9, 2026
Iceberg v4's _last_updated_time Column: "Rows Changed Since T" Without Rewriting Manifests
Iceberg v4's _last_updated_time column records when each row last changed, inherited from the snapshot timestamp with no manifest rewrite.
Apache Icebergiceberg-v4row-lineage - 20 MIN READ•Nov 9, 2026
Should Iceberg v4 Stop Writing ORC and Avro Data Files? The Feature-Gap Case and the Read Path That Stays
Iceberg v4 may stop writing ORC and Avro data files while keeping existing files readable, plus how to audit an estate and plan a migration.
Apache Icebergiceberg-v4parquet - 20 MIN READ•Nov 9, 2026
Iceberg v4 Stats-Only Fields: How Tables Store Statistics for Partition Expressions, and Why tight_stats Replaced tight_bounds
Iceberg v4 stats-only fields give derived values a field ID in content_stats, and the file-level tight_stats flag says when statistics are exact.
Apache Icebergiceberg-v4statistics - 33 MIN READ•Oct 28, 2026
Primary Keys Come to Apache Iceberg V4, and Most of Them Start Out Unenforced
Apache Iceberg V4 adds primary key, unique and check constraints, an enforced flag and per-snapshot status. What the spec says and how to prepare tables.
apache-icebergiceberg-v4data-quality - 32 MIN READ•Sep 21, 2026
What Iceberg v4's Proposed FILE Type Means for Multimodal Tables
Iceberg v4's proposed FILE type brings first-class media references to tables, via Parquet's FILE logical type, ranges, checksums, and pre-signed URLs.
Apache IcebergIceberg v4Multimodal - 32 MIN READ•Aug 25, 2026
Parquet-Only Manifests in Iceberg v4: Why the Metadata Layer Is Going Columnar
Iceberg v4 is moving manifests from Avro to Parquet so planners can read only the stats they need. Why the metadata layer is going columnar.
Apache IcebergIceberg v4Parquet - 31 MIN READ•Aug 24, 2026
Iceberg v4's Adaptive Metadata Tree, Explained From First Principles
Iceberg v4's adaptive metadata tree, explained from first principles: why commits rewrite too much today and how the tree makes change cheaper.
Apache IcebergIceberg v4metadata - 30 MIN READ•Aug 24, 2026
Why Iceberg v4 Is Really About Making the Cost of Change Proportional to the Change
Iceberg v4 is really about making the cost of a change proportional to the change. The principle, the current tax, and what the redesign pays down.
Apache IcebergIceberg v4metadata - 21 MIN READ•Aug 4, 2026
Reading the Apache Iceberg V4 Proposals Before They Land
A field guide to the Apache Iceberg V4 proposals: adaptive metadata trees, single-file commits, typed statistics, column families, and what is safe.
Apache IcebergIceberg V4Metadata - 30 MIN READ•Jul 6, 2026
The State of Apache Iceberg v4 in July 2026: What the Dev List Tells Us About the Format's Next Chapter
What the Iceberg v4 dev list tells us about adaptive metadata trees, single-file commits, column updates, and the format's next chapter in mid-2026.
Apache Icebergdata engineeringlakehouse architecture