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Tag: Parquet

2026-08-25 • Alex Merced

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 laye...

2026-08-24 • Alex Merced

Variant Shredding Explained: How Iceberg Gets Columnar Performance From Messy JSON

Variant shredding turns messy JSON into Parquet columns with statistics. How the layout works, how readers reassemble va...

2026-08-04 • Alex Merced

A Migration Playbook for Moving Legacy Warehouses onto Apache Iceberg

A dependency-first playbook for migrating legacy warehouses onto Apache Iceberg: snapshot vs migrate vs add_files, four-...

2026-07-28 • Alex Merced

The Parquet Versioning Problem, and Why Iceberg Cares About It

Parquet files have a version field that doesn't reliably signal feature requirements. A new versioning discipline is com...

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